This handy Spectrum Math Grade 4 Answer Key Chapter 1 Lesson 1.6 Subtracting 2 Digits from 3 Digits (renaming) provides detailed answers for the workbook questions.
Spectrum Math Grade 4 Chapter 1 Lesson 1.6 Subtracting 2 Digits from 3 Digits (renaming) Answers Key
To subtract the ones, rename 5 tens and 3 ones as “4 tens and 13 ones.”
Subtract.
Question 1.
a.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 5 ones as “6 tens and 15 ones.”
8 is greater than 5 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 5, so 5 becomes 15.
15 minus 8 is 7
6 minus 3 is 3
1 minus 0 is 1
b.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 5 ones as “6 tens and 15 ones.”
7 is greater than 2 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 2, so 2 becomes 12.
12 minus 7 is 5
2 minus 1 is 1
1 minus 0 is 1
c.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 5 ones as “6 tens and 15 ones.”
6 is greater than 5 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 5, so 5 becomes 15.
15 minus 6 is 9
6 minus 5 is 1
1 minus 0 is 1
d.
Answer:
Explanation:
To subtract the ones, rename 3 tens and 4 ones as “2 tens and 14 ones.”
9 is greater than 4 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 4, so 4 becomes 14.
14 minus 9 is 5
2 minus 2 is 0
1 minus 0 is 1
e.
Answer:
Explanation:
To subtract the ones, rename 4 tens and 4 ones as “3 tens and 14 ones.”
8 is greater than 4 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 4, so 4 becomes 14.
14 minus 8 is 6
3 minus 2 is 1
1 minus 0 is 1
f.
Answer:
Explanation:
To subtract the ones, rename 5 tens and 6 ones as “4 tens and 16 ones.”
8 is greater than 6 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 6, so 6 becomes 16.
16 minus 8 is 8
4 minus 3 is 1
1 minus 0 is 1
Question 2.
a.
Answer:
Explanation:
To subtract the ones, rename 8 tens and 2 ones as “7 tens and 12 ones.”
3 is greater than 2 so you must regroup:
Take 1 from 8, so 8 becomes 7.
Add 10 to 2, so 2 becomes 12.
12 minus 3 is 9
7 minus 7 is 0
1 minus 0 is 1
b.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 7 ones as “6 tens and 17 ones.”
9 is greater than 7 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 7, so 7 becomes 17.
17 minus 9 is 8
6 minus 5 is 1
1 minus 0 is 1
c.
Answer:
Explanation:
To subtract the ones, rename 2 tens and 3 ones as “1 tens and 13 ones.”
8 is greater than 3 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 3, so 3 becomes 13.
13 minus 8 is 5
1 minus 1 is 0
1 minus 0 is 1
d.
Answer:
Explanation:
To subtract the ones, rename 4 tens and 1 ones as “3 tens and 11 ones.”
3 is greater than 1 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 1, so 1 becomes 11.
11 minus 3 is 8
3 minus 3 is 0
1 minus 0 is 1
e.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 3 ones as “6 tens and 13 ones.”
4 is greater than 3 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 3, so 3 becomes 13.
13 minus 4 is 9
6 minus 5 is 1
1 minus 0 is 1
f.
Answer:
Explanation:
To subtract the ones, rename 8 tens and 2 ones as “7 tens and 12 ones.”
8 is greater than 2 so you must regroup:
Take 1 from 8, so 8 becomes 7.
Add 10 to 2, so 2 becomes 12.
12 minus 8 is 4
7 minus 4 is 3
1 minus 0 is 1
Question 3.
a.
Answer:
Explanation:
To subtract the ones, rename 4 tens and 1 ones as “3 tens and 11 ones.”
9 is greater than 1 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 1, so 1 becomes 11.
11 minus 9 is 2
3 minus 2 is 1
1 minus 0 is 1
b.
Answer:
Explanation:
To subtract the ones, rename 9 tens and 3 ones as “8 tens and 13 ones.”
7 is greater than 3 so you must regroup:
Take 1 from 9, so 9 becomes 8.
Add 10 to 3, so 3 becomes 13.
13 minus 7 is 6
8 minus 4 is 4
1 minus 0 is 1
c.
Answer:
Explanation:
To subtract the ones, rename 6 tens and 5 ones as “5 tens and 15 ones.”
6 is greater than 5 so you must regroup:
Take 1 from 6, so 6 becomes 5.
Add 10 to 5, so 5 becomes 15.
15 minus 6 is 9
5 minus 4 is 1
1 minus 0 is 1
d.
Answer:
Explanation:
To subtract the ones, rename 5 tens and 2 ones as “4 tens and 12 ones.”
7 is greater than 2 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 2, so 2 becomes 12.
12 minus 7 is 5
4 minus 3 is 1
1 minus 0 is 1
e.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 2 ones as “6 tens and 12 ones.”
9 is greater than 2 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 2, so 2 becomes 12.
12 minus 9 is 3
6 minus 2 is 4
1 minus 0 is 1
f.
Answer:
Explanation:
To subtract the ones, rename 6 tens and 1 ones as “5 tens and 11 ones.”
7 is greater than 1 so you must regroup:
Take 1 from 6, so 6 becomes 5.
Add 10 to 1, so 1 becomes 11.
11 minus 7 is 4
5 minus 2 is 3
1 minus 0 is 1
Question 4.
a.
Answer:
Explanation:
To subtract the ones, rename 8 tens and 3 ones as “7 tens and 13 ones.”
8 is greater than 3 so you must regroup:
Take 1 from 8, so 8 becomes 7.
Add 10 to 3, so 3 becomes 13.
13 minus 8 is 5
7 minus 6 is 1
1 minus 0 is 1
b.
Answer:
Explanation:
To subtract the ones, rename 2 tens and 7 ones as “1 tens and 17 ones.”
8 is greater than 7 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
1 minus 1 is 0
1 minus 0 is 1
c.
Answer:
Explanation:
To subtract the ones, rename 3 tens and 4 ones as “2 tens and 14 ones.”
9 is greater than 4 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 4, so 4 becomes 14.
14 minus 9 is 5
2 minus 1 is 1
1 minus 0 is 1
d.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 2 ones as “6 tens and 12 ones.”
7 is greater than 2 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 2, so 2 becomes 12.
12 minus 7 is 5
6 minus 5 is 1
1 minus 0 is 1
e.
Answer:
Explanation:
To subtract the ones, rename 2 tens and 4 ones as “1 tens and 14 ones.”
7 is greater than 4 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 4, so 4 becomes 14.
14 minus 7 is 7
1 minus 1 is 0
1 minus 0 is 1
f.
Answer:
Explanation:
To subtract the ones, rename 5 tens and 3 ones as “4 tens and 13 ones.”
7 is greater than 3 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 3, so 3 becomes 13.
13 minus 7 is 6
4 minus 3 is 1
1 minus 0 is 1
Question 5.
a.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 1 ones as “6 tens and 11 ones.”
9 is greater than 1 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 1, so 1 becomes 11.
11 minus 9 is 2
6 minus 3 is 3
1 minus 0 is 1
b.
Answer:
Explanation:
To subtract the ones, rename 4 tens and 6 ones as “3 tens and 16 ones.”
7 is greater than 6 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 6, so 6 becomes 16.
16 minus 7 is 9
3 minus 2 is 1
1 minus 0 is 1
c.
Answer:
Explanation:
To subtract the ones, rename 8 tens and 3 ones as “7 tens and 13 ones.”
8 is greater than 3 so you must regroup:
Take 1 from 8, so 8 becomes 7.
Add 10 to 3, so 3 becomes 13.
13 minus 8 is 5
7 minus 6 is 1
1 minus 0 is 1
d.
Answer:
Explanation:
To subtract the ones, rename 9 tens and 1 ones as “8 tens and 11 ones.”
2 is greater than 1 so you must regroup:
Take 1 from 9, so 9 becomes 8.
Add 10 to 1, so 1 becomes 11.
11 minus 2 is 9
8 minus 7 is 1
1 minus 0 is 1
e.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 3 ones as “6 tens and 13 ones.”
7 is greater than 3 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 3, so 3 becomes 13.
13 minus 7 is 6
6 minus 4 is 2
1 minus 0 is 1
f.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 3 ones as “6 tens and 13 ones.”
8 is greater than 7 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
4 minus 3 is 1
1 minus 0 is 1
Question 6.
a.
Answer:
Explanation:
To subtract the ones, rename 2 tens and 8 ones as “1 tens and 18 ones.”
9 is greater than 8 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 8, so 8 becomes 18.
18 minus 9 is 9
1 minus 1 is 0
1 minus 0 is 1
b.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 2 ones as “6 tens and 12 ones.”
6 is greater than 2 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 2, so 2 becomes 12.
12 minus 6 is 6
6 minus 3 is 3
1 minus 0 is 1
c.
Answer:
Explanation:
To subtract the ones, rename 5 tens and 6 ones as “4 tens and 16 ones.”
9 is greater than 6 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 6, so 6 becomes 16.
16 minus 9 is 7
4 minus 2 is 2
1 minus 0 is 1
d.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 7 ones as “6 tens and 17 ones.”
9 is greater than 7 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 7, so 7 becomes 17.
17 minus 9 is 8
6 minus 3 is 3
1 minus 0 is 1
e.
Answer:
Explanation:
To subtract the ones, rename 5 tens and 2 ones as “4 tens and 12 ones.”
9 is greater than 2 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 2, so 2 becomes 12.
12 minus 9 is 3
4 minus 1 is 3
1 minus 0 is 1
f.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 4 ones as “6 tens and 14 ones.”
8 is greater than 4 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 4, so 4 becomes 14.
14 minus 8 is 6
6 minus 3 is 3
1 minus 0 is 1
Question 7.
a.
Answer:
Explanation:
To subtract the ones, rename 4 tens and 5 ones as “3 tens and 15 ones.”
6 is greater than 5 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 5, so 5 becomes 15.
15 minus 6 is 9
3 minus 2 is 1
1 minus 0 is 1
b.
Answer:
Explanation:
To subtract the ones, rename 6 tens and 1 ones as “5 tens and 11 ones.”
3 is greater than 1 so you must regroup:
Take 1 from 6, so 6 becomes 5.
Add 10 to 1, so 1 becomes 11.
11 minus 3 is 8
5 minus 3 is 2
1 minus 0 is 1
c.
Answer:
Explanation:
To subtract the ones, rename 7 tens and 3 ones as “6 tens and 13 ones.”
7 is greater than 3 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 3, so 3 becomes 13.
13 minus 7 is 6
6 minus 3 is 3
1 minus 0 is 1
d.
Answer:
Explanation:
To subtract the ones, rename 2 tens and 7 ones as “1 tens and 17 ones.”
8 is greater than 7 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
1 minus 1 is 0
1 minus 0 is 1
e.
Answer:
Explanation:
To subtract the ones, rename 5 tens and 3 ones as “4 tens and 13 ones.”
8 is greater than 3 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 3, so 3 becomes 13.
13 minus 8 is 5
4 minus 2 is 2
1 minus 0 is 1
f.
Answer:
Explanation:
To subtract the ones, rename 9 tens and 1 ones as “8 tens and 11 ones.”
3 is greater than 1 so you must regroup:
Take 1 from 9, so 9 becomes 8.
Add 10 to 1, so 1 becomes 11.
11 minus 3 is 8
8 minus 7 is 1
1 minus 0 is 1
Rename 515 as “5 hundreds, 0 tens, and 15 ones.” Subtract the ones.
Then, rename “4 hundreds, 10 tens, and 15 ones.” Subtract the tens.
Subtract the hundreds.
Subtract.
Question 1.
a.
Answer:
Explanation:
Rename 138 as “1 hundreds, 2 tens, and 18 ones.” Subtract the ones.
Then, rename “0 hundreds, 12 tens, and 18 ones.” Subtract the tens.
9 is greater than 8 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 8, so 8 becomes 18.
18 minus 9 is 9
5 is greater than 2 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 2, so 2 becomes 12.
12 minus 5 is 7
0 minus 0 is 0
b.
Answer:
Explanation:
Rename 162 as “1 hundreds, 5 tens, and 12 ones.” Subtract the ones.
Then, rename “0 hundreds, 15 tens, and 12 ones.” Subtract the tens.
9 is greater than 2 so you must regroup:
Take 1 from 6, so 6 becomes 5.
Add 10 to 2, so 2 becomes 12.
12 minus 9 is 3
7 is greater than 5 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 5, so 5 becomes 15.
15 minus 7 is 8
0 minus 0 is 0
c.
Answer:
Explanation:
Rename 155 as “1 hundreds, 4 tens, and 15 ones.” Subtract the ones.
Then, rename “0 hundreds, 14 tens, and 15 ones.” Subtract the tens.
6 is greater than 5 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 5, so 5 becomes 15.
15 minus 6 is 9
6 is greater than 4 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 4, so 4 becomes 14.
14 minus 6 is 8
0 minus 0 is 0
d.
Answer:
Explanation:
Rename 128 as “1 hundreds, 1 tens, and 18 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 18 ones.” Subtract the tens.
9 is greater than 8 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 8, so 8 becomes 18.
18 minus 9 is 9
5 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 5 is 6
0 minus 0 is 0
e.
Answer:
Explanation:
Rename 147 as “1 hundreds, 3 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 13 tens, and 17 ones.” Subtract the tens.
8 is greater than 7 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
5 is greater than 3 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 3, so 3 becomes 13.
13 minus 5 is 8
0 minus 0 is 0
f.
Answer:
Explanation:
Rename 174 as “1 hundreds, 6 tens, and 14 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 14 ones.” Subtract the tens.
5 is greater than 4 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 4, so 4 becomes 14.
14 minus 5 is 9
8 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 8 is 8
0 minus 0 is 0
Question 2.
a.
Answer:
Explanation:
Rename 131 as “1 hundreds, 2 tens, and 11 ones.” Subtract the ones.
Then, rename “0 hundreds, 12 tens, and 11 ones.” Subtract the tens.
9 is greater than 1 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 1, so 1 becomes 11.
11 minus 9 is 2
4 is greater than 2 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 2, so 2 becomes 12.
12 minus 4 is 8
0 minus 0 is 0
b.
Answer:
Explanation:
Rename 153 as “1 hundreds, 4 tens, and 13 ones.” Subtract the ones.
Then, rename “0 hundreds, 14 tens, and 13 ones.” Subtract the tens.
7 is greater than 3 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 3, so 3 becomes 13.
13 minus 7 is 6
6 is greater than 4 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 4, so 4 becomes 14.
14 minus 6 is 8
0 minus 0 is 0
c.
Answer:
Explanation:
Rename 167 as “1 hundreds, 5 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 15 tens, and 17 ones.” Subtract the tens.
9 is greater than 7 so you must regroup:
Take 1 from 6, so 6 becomes 5.
Add 10 to 7, so 7 becomes 17.
17 minus 9 is 8
7 is greater than 5 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 5, so 5 becomes 15.
15 minus 7 is 8
0 minus 0 is 0
d.
Answer:
Explanation:
Rename 144 as “1 hundreds, 3 tens, and 14 ones.” Subtract the ones.
Then, rename “0 hundreds, 13 tens, and 14 ones.” Subtract the tens.
8 is greater than 4 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 4, so 4 becomes 14.
14 minus 8 is 6
5 is greater than 3 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 3, so 3 becomes 13.
13 minus 5 is 8
0 minus 0 is 0
e.
Answer:
Explanation:
Rename 172 as “1 hundreds, 6 tens, and 12 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 12 ones.” Subtract the tens.
9 is greater than 2 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 2, so 2 becomes 12.
12 minus 9 is 3
8 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 8 is 8
0 minus 0 is 0
f.
Answer:
Explanation:
Rename 125 as “1 hundreds, 1 tens, and 15 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 15 ones.” Subtract the tens.
8 is greater than 5 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 5, so 5 becomes 15.
15 minus 8 is 7
3 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 3 is 8
0 minus 0 is 0
Question 3.
a.
Answer:
Explanation:
Rename 114 as “1 hundreds, 0 tens, and 14 ones.” Subtract the ones.
Then, rename “0 hundreds, 10 tens, and 14 ones.” Subtract the tens.
7 is greater than 4 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 4, so 4 becomes 14.
14 minus 7 is 7
3 is greater than 0 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 0, so 0 becomes 10.
10 minus 3 is 7
0 minus 0 is 0
b.
Answer:
Explanation:
Rename 134 as “1 hundreds, 2 tens, and 14 ones.” Subtract the ones.
Then, rename “0 hundreds, 12 tens, and 14 ones.” Subtract the tens.
6 is greater than 4 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 4, so 4 becomes 14.
14 minus 6 is 8
5 is greater than 2 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 2, so 2 becomes 12.
12 minus 5 is 7
0 minus 0 is 0
c.
Answer:
Explanation:
Rename 181 as “1 hundreds, 7 tens, and 11 ones.” Subtract the ones.
Then, rename “0 hundreds, 17 tens, and 11 ones.” Subtract the tens.
2 is greater than 1 so you must regroup:
Take 1 from 8, so 8 becomes 7.
Add 10 to 1, so 1 becomes 11.
11 minus 2 is 9
9 is greater than 7 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 7, so 7 becomes 17.
17 minus 9 is 8
0 minus 0 is 0
d.
Answer:
Explanation:
Rename 133 as “1 hundreds, 2 tens, and 13 ones.” Subtract the ones.
Then, rename “0 hundreds, 12 tens, and 13 ones.” Subtract the tens.
4 is greater than 3 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 3, so 3 becomes 13.
13 minus 4 is 9
4 is greater than 2 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 2, so 2 becomes 12.
12 minus 4 is 8
0 minus 0 is 0
e.
Answer:
Explanation:
Rename 127 as “1 hundreds, 1 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 17 ones.” Subtract the tens.
9 is greater than 7 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 7, so 7 becomes 17.
17 minus 9 is 8
4 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 4 is 7
0 minus 0 is 0
f.
Answer:
Explanation:
Rename 174 as “1 hundreds, 6 tens, and 14 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 14 ones.” Subtract the tens.
8 is greater than 4 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 4, so 4 becomes 14.
14 minus 8 is 6
8 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 8 is 8
0 minus 0 is 0
Question 4.
a.
Answer:
Explanation:
Rename 122 as “1 hundreds, 1 tens, and 12 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 12 ones.” Subtract the tens.
8 is greater than 2 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 2, so 2 becomes 12.
12 minus 8 is 4
8 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 8 is 3
0 minus 0 is 0
b.
Answer:
Explanation:
Rename 154 as “1 hundreds, 4 tens, and 14 ones.” Subtract the ones.
Then, rename “0 hundreds, 14 tens, and 14 ones.” Subtract the tens.
7 is greater than 4 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 4, so 4 becomes 14.
14 minus 7 is 7
7 is greater than 4 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 4, so 4 becomes 14.
14 minus 7 is 7
0 minus 0 is 0
c.
Answer:
Explanation:
Rename 161 as “1 hundreds, 5 tens, and 11 ones.” Subtract the ones.
Then, rename “0 hundreds, 15 tens, and 11 ones.” Subtract the tens.
4 is greater than 1 so you must regroup:
Take 1 from 6, so 6 becomes 5.
Add 10 to 1, so 1 becomes 11.
11 minus 4 is 7
9 is greater than 5 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 5, so 5 becomes 15.
15 minus 9 is 6
0 minus 0 is 0
d.
Answer:
Explanation:
Rename 166 as “1 hundreds, 5 tens, and 16 ones.” Subtract the ones.
Then, rename “0 hundreds, 15 tens, and 16 ones.” Subtract the tens.
7 is greater than 6 so you must regroup:
Take 1 from 6, so 6 becomes 5.
Add 10 to 6, so 6 becomes 16.
16 minus 7 is 9
8 is greater than 5 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 5, so 5 becomes 15.
15 minus 8 is 7
0 minus 0 is 0
e.
Answer:
Explanation:
Rename 127 as “1 hundreds, 1 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 17 ones.” Subtract the tens.
8 is greater than 7 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
5 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 5 is 6
0 minus 0 is 0
f.
Answer:
Explanation:
Rename 172 as “1 hundreds, 6 tens, and 12 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 12 ones.” Subtract the tens.
9 is greater than 2 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 2, so 2 becomes 12.
12 minus 9 is 3
9 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 9 is 7
0 minus 0 is 0
Question 5.
a.
Answer:
Explanation:
Rename 177 as “1 hundreds, 6 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 17 ones.” Subtract the tens.
8 is greater than 7 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
8 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 8 is 8
0 minus 0 is 0
b.
Answer:
Explanation:
Rename 123 as “1 hundreds, 1 tens, and 13 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 13 ones.” Subtract the tens.
5 is greater than 3 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 3, so 3 becomes 13.
13 minus 5 is 8
4 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 4 is 7
0 minus 0 is 0
c.
Answer:
Explanation:
Rename 147 as “1 hundreds, 3 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 13 tens, and 17 ones.” Subtract the tens.
8 is greater than 7 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
6 is greater than 3 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 3, so 3 becomes 13.
13 minus 6 is 7
0 minus 0 is 0
d.
Answer:
Explanation:
Rename 181 as “1 hundreds, 7 tens, and 11 ones.” Subtract the ones.
Then, rename “0 hundreds, 17 tens, and 11 ones.” Subtract the tens.
5 is greater than 1 so you must regroup:
Take 1 from 8, so 8 becomes 7.
Add 10 to 1, so 1 becomes 11.
11 minus 5 is 6
9 is greater than 7 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 7, so 7 becomes 17.
17 minus 9 is 8
0 minus 0 is 0
e.
Answer:
Explanation:
Rename 175 as “1 hundreds, 6 tens, and 15 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 15 ones.” Subtract the tens.
9 is greater than 5 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 5, so 5 becomes 15.
15 minus 9 is 6
8 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 8 is 8
0 minus 0 is 0
f.
Answer:
Explanation:
Rename 141 as “1 hundreds, 3 tens, and 11 ones.” Subtract the ones.
Then, rename “0 hundreds, 13 tens, and 11 ones.” Subtract the tens.
3 is greater than 1 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 1, so 1 becomes 11.
11 minus 3 is 8
8 is greater than 3 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 3, so 3 becomes 13.
13 minus 8 is 5
0 minus 0 is 0
Question 6.
a.
Answer:
Explanation:
Rename 185 as “1 hundreds, 7 tens, and 15 ones.” Subtract the ones.
Then, rename “0 hundreds, 17 tens, and 15 ones.” Subtract the tens.
7 is greater than 5 so you must regroup:
Take 1 from 8, so 8 becomes 7.
Add 10 to 5, so 5 becomes 15.
15 minus 7 is 8
9 is greater than 7 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 7, so 7 becomes 17.
17 minus 9 is 8
0 minus 0 is 0
b.
Answer:
Explanation:
Rename 173 as “1 hundreds, 6 tens, and 13 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 13 ones.” Subtract the tens.
7 is greater than 3 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 3, so 3 becomes 13.
13 minus 7 is 6
8 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 8 is 8
0 minus 0 is 0
c.
Answer:
Explanation:
Rename 142 as “1 hundreds, 3 tens, and 12 ones.” Subtract the ones.
Then, rename “0 hundreds, 13 tens, and 12 ones.” Subtract the tens.
4 is greater than 2 so you must regroup:
Take 1 from 4, so 4 becomes 3.
Add 10 to 2, so 2 becomes 12.
12 minus 4 is 8
8 is greater than 3 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 3, so 3 becomes 13.
13 minus 8 is 5
0 minus 0 is 0
d.
Answer:
Explanation:
Rename 177 as “1 hundreds, 6 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 17 ones.” Subtract the tens.
8 is greater than 7 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
9 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 9 is 7
0 minus 0 is 0
e.
Answer:
Explanation:
Rename 136 as “1 hundreds, 2 tens, and 16 ones.” Subtract the ones.
Then, rename “0 hundreds, 12 tens, and 16 ones.” Subtract the tens.
9 is greater than 6 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 6, so 6 becomes 16.
16 minus 9 is 7
4 is greater than 2 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 2, so 2 becomes 12.
12 minus 4 is 8
0 minus 0 is 0
f.
Answer:
Explanation:
Rename 123 as “1 hundreds, 1 tens, and 13 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 13 ones.” Subtract the tens.
7 is greater than 3 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 3, so 3 becomes 13.
13 minus 7 is 6
7 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 7 is 4
0 minus 0 is 0
Question 7.
a.
Answer:
Explanation:
Rename 127 as “1 hundreds, 1 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 17 ones.” Subtract the tens.
8 is greater than 7 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
5 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 5 is 6
0 minus 0 is 0
b.
Answer:
Explanation:
Rename 126 as “1 hundreds, 1 tens, and 16 ones.” Subtract the ones.
Then, rename “0 hundreds, 11 tens, and 16 ones.” Subtract the tens.
8 is greater than 6 so you must regroup:
Take 1 from 2, so 2 becomes 1.
Add 10 to 6, so 6 becomes 16.
16 minus 8 is 8
7 is greater than 1 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 1, so 1 becomes 11.
11 minus 7 is 4
0 minus 0 is 0
c.
Answer:
Explanation:
Rename 166 as “1 hundreds, 5 tens, and 16 ones.” Subtract the ones.
Then, rename “0 hundreds, 15 tens, and 16 ones.” Subtract the tens.
9 is greater than 6 so you must regroup:
Take 1 from 6, so 6 becomes 5.
Add 10 to 6, so 6 becomes 16.
16 minus 9 is 7
8 is greater than 5 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 5, so 5 becomes 15.
15 minus 8 is 7
0 minus 0 is 0
d.
Answer:
Explanation:
Rename 137 as “1 hundreds, 2 tens, and 17 ones.” Subtract the ones.
Then, rename “0 hundreds, 12 tens, and 17 ones.” Subtract the tens.
8 is greater than 7 so you must regroup:
Take 1 from 3, so 3 becomes 2.
Add 10 to 7, so 7 becomes 17.
17 minus 8 is 9
8 is greater than 2 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 2, so 2 becomes 12
12 minus 8 is 4
0 minus 0 is 0
e.
Answer:
Explanation:
Rename 153 as “1 hundreds, 4 tens, and 14 ones.” Subtract the ones.
Then, rename “0 hundreds, 14 tens, and 14 ones.” Subtract the tens.
4 is greater than 3 so you must regroup:
Take 1 from 5, so 5 becomes 4.
Add 10 to 3, so 3 becomes 13.
13 minus 4 is 9
8 is greater than 4 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 4, so 4 becomes 14.
14 minus 8 is 6
0 minus 0 is 0
f.
Answer:
Explanation:
Rename 175 as “1 hundreds, 6 tens, and 15 ones.” Subtract the ones.
Then, rename “0 hundreds, 16 tens, and 15 ones.” Subtract the tens.
7 is greater than 5 so you must regroup:
Take 1 from 7, so 7 becomes 6.
Add 10 to 5, so 5 becomes 15.
15 minus 7 is 8
9 is greater than 6 so you must regroup:
Take 1 from 1, so 1 becomes 0.
Add 10 to 6, so 6 becomes 16.
16 minus 9 is 7
0 minus 0 is 0