This handy Spectrum Math Grade 4 Answer Key Chapter 3 Posttest provides detailed answers for the workbook questions.
Spectrum Math Grade 4 Chapter 3 Posttest Answers Key
Check What You Learned
Adding and Subtracting 3 through 5 Digits
Add or subtract.
Question 1.
a.
Answer:
Addition of 89700 with 9313 then you get 99013.
Explanation:
Add the ones place
By adding 0 with 3 we get 3.
Add the tens.
By adding 0 and 1 we get 1.
Add the hundreds place:
By adding 7 and 3 we get 10. Here 1 added to the thousands place.
Add the thousands place.
By adding 1, 9 and 9 we get 19. Here add 1 to the ten thousands place.
By adding 1 and 8 we get 9.
b.
Answer:
Addition of 49713 with 13169 then you get 62882.
Explanation:
Add the ones:
By adding 3 and 9 we get 12. Here add 1 to the tens place.
Add the tens place:
By adding 1, 1 and 6 we get 8.
Add the hundreds:
By adding 7 and 1 then you get 8.
Add the thousands place:
By adding 9 and 3 we get 12. Here add 1 to the ten thousands place.
By adding 1, 4 and 1 you get 6.
c.
Answer:
Addition of 790 with 304 then you get 1094.
Explanation:
Add the ones:
By adding 0 and 4 we get 4.
Add the tens place:
By adding 0 and 9 we get 9.
Add the hundreds place:
By adding 7 and 3 we get 10.
d.
Answer:
Addition of 1825 with 775 then you get 2600.
Add the ones:
By adding 5 and 5 we get 10. Here add 1 to the tens place.
Add the tens place:
By adding 1, 2 and 7 we get 10. Here add 1 to the hundreds place.
Add the hundreds place:
By adding 1, 8 and 7 we get 16. Add 1 to the thousands place.
Add the thousands place:
By adding 1 and 1 we get 2.
e.
Answer:
Addition of 7914 with 308 then you get 8222.
Explanation:
Add the ones:
By adding 4 and 8 we get 12. Here add 1 to the tens place.
Add the tens:
By adding 1, 1 and 0 we get 2.
Add the hundreds place:
By adding 9 and 3 we get 12. Here add 1 to the thousands place.
Add the thousands place:
By adding 1 and 7 we get 8.
Question 2.
a.
Answer:
Addition of 15431 with 10917 then you get 26348.
Explanation:
Add the ones:
By adding 1 and 7 then you get 8.
Add the tens:
By adding 3 and 1 then you get 4.
Add the hundreds :
By adding 4 and 9 then you get 13. Here add 1 to the thousands place.
Add the thousands:
By adding 1 and 5 then you get 6.
Add the ten thousands:
By adding 1 and 1 then you get 2.
b.
Answer:
Addition of 50012 with 1597 then you get 51609.
Explanation:
Add the ones:
By adding 2 and 7 then you get 9.
Add the tens:
By adding 1 and 9 then you get 10. Add 1 to the hundreds place.
Add the hundreds place:
By adding 1 , 0 and 5 then you get 6.
Add the thousands place:
By adding 0 and 1 then you get 1.
Add the ten thousands place:
By adding 5 and 0 then you get 5.
c.
Answer:
Addition of 2118 with 825 then you get 2943.
Explanation:
Add the ones:
By adding 8 and 5 we get 13. Here add 1 to the tens place.
Add the tens:
By adding 1, 1 and 2 we get 4.
Add the hundreds:
By adding 1 and 8 we get 9.
Add the thousands:
By adding 2 and 0 we get 2.
d.
Answer:
Addition of 7381 with 5964 then you get 13345.
Explanation:
Add the ones:
By adding 1 and 4 we get 5.
Add the tens:
By adding 8 and 6 we get 14. Here add 1 to the hundreds place.
Add the hundreds:
By adding 1, 3 and 9 we get 13.
Add the thousands:
By adding 1, 7 and 5 we get 13.
e.
Answer:
Addition of 52005 with 8007 then you get 60012.
Explanation:
Add the ones:
By adding 5 and 7 we get 12.
Add the tens:
By adding 1, 0 and 0 we get 1.
Add the hundreds:
By adding 0 and 0 we get 0.
Add thousands:
By adding 2 and 8 we get 10. Here add 1 to the ten thousands place.
Add ten thousands:
By adding 1 and 5 we get 6.
Question 3.
a.
Answer:
Addition of 735, 162, 94 then you get 991.
Explanation:
Add the ones:
By adding 5, 2 and 4 we get 11. Here add 1 to the tens place.
Add the tens:
By adding 1, 3, 6 and 9 we get 19. Here add 1 to the hundreds place.
Add the hundreds:
By adding 1, 7 and 1 we get 9.
b.
Answer:
Addition of 6280 with 3770 then you get 10050.
Explanation:
Add the ones:
By adding 0 and 0 we get 0.
Add the tens:
By adding 8 and 7 we get 15.
Add the hundreds:
By adding 1, 2 and 7 we get 10.
Add the thousands:
By adding 1, 6 and 3 we get 10.
c.
Answer:
Addition of 2515, 1003, 714 then you get 4231.
Explanation:
Add the ones:
By adding 5, 3 and 4 we get 12.
Add the tens:
By adding 1, 1, 0 and 1 we get 3.
Add the hundreds:
By adding 5, 0 and 7 we get 12.
Add the thousands:
By adding 1, 2 and 1 we get 4.
d.
Answer:
Addition of 68810 with 43057 then you get 111867.
Explanation:
Add the ones:
By adding 0 and 7 we get 7.
Add the tens:
By adding 1 and 5 we get 6.
Add the hundreds:
By adding 8 and 0 we get 8.
Add the thousands:
By adding 8 and 3 we get 11. Here add 1 to the ten thousands place.
Add the ten thousands:
By adding 1, 6 and 4 we get 11.
e.
Answer:
Addition of 8291, 6104, 5596 then you get 19991.
Explanation:
Add the ones:
By adding 1, 4 and 6 we get 11. Add 1 to the tens place.
Add the tens:
By adding 1, 9, 0 and 9 we get 19. Add 1 to the hundreds place.
Add the hundreds:
By adding 1, 2, 1 and 5 we get 9.
Add the thousands:
By adding 8, 6 and 5 we get 19.
Question 4.
a.
Answer:
Subtract 7210 from 68045 then you get 60835.
Explanation:
Subtract the ones:
By subtracting 0 from 5 we get 5.
Subtract the tens:
By subtracting 1 from 4 we get 3.
Subtract the hundreds:
By subtracting 2 from 0 it is not defined, So, take borrow from thousands.
By subtracting 2 from 10 we get 8.
Subtract the thousands:
By subtracting 7 from 7 we get 0.
Subtract the ten thousand:
By subtracting 0 from 6 we get 6.
b.
Answer:
Subtract 2756 from 3815 then you get 1049.
Explanation:
Subtract the ones:
Subtract 6 from 5 it is not defined. So, take the borrow from tens place.
Subtract the tens:
Subtract 5 From 0 it is not defined. So, take borrow from hundreds place.
10 – 5 = 5.
Subtract the hundreds:
Subtract 7 from 7 we get 0.
Subtract the thousands:
By subtracting 2 from 3 we get 1.
c.
Answer:
Subtract 18792 from 22816 then you get 4014.
Explanation:
Subtract the ones:
By subtracting 2 from 6 we get 4.
Subtract the tens:
By subtracting 9 from 1 it is not defined. So, take the borrow from hundreds.
Subtract the hundreds:
By subtracting 7 from 7 we get 0.
Subtract the thousands:
By subtracting 8 from 2 is not possible. So, take the borrow from ten thousands place.
By subtracting 8 from 12 we get 4.
Subtract the ten thousands:
By subtracting 1 from 2 we get 1.
d.
Answer:
Subtract 993 from 7892 then you get 6899.
Explanation:
Subtract the ones:
By subtracting 3 from 2 it is not possible, So take borrow from tens place.
12 – 3 = 9.
Subtract the tens:
By subtracting 9 from 8 it is not possible, So take borrow from hundreds place.
18 – 9 = 9
Subtract the hundreds:
By subtracting 9 from 7 is not possible, So take borrow from ten thousands place.
17 – 9 = 8.
Subtract the ten thousand:
By subtracting 0 from 6 we get 6.
e.
Answer:
Subtract 40007 from 68613 then you get 28606.
Explanation:
Subtract the ones.
By subtracting 7 from 3 is not possible. So, take borrow from the tens place.
Subtract the tens:
By subtracting 0 from 0 we get 0.
Subtract the hundreds:
By subtracting 0 from 6 we get 6.
Subtract the thousands:
Subtract the 0 from 8 we get 8.
Subtract the ten thousands:
Subtract the 4 from 6 we get 2.
Question 5.
a.
Answer:
Subtract 9073 from 66891 then you get 57818.
Explanation:
Subtract the ones:
Subtract 3 from 1 is not possible. So, take borrow from tens place.
11 – 3 = 4.
Subtract the tens:
By subtracting 7 from 8 we get 1.
Subtract the hundreds:
By subtracting 0 from 8 we get 8.
Subtract the thousands:
By subtracting 9 from 6 is not possible, So take the borrow from ten thousands place.
16 – 9 = 7
Subtracting the ten thousands:
By subtracting 0 from 5 we get 5.
b.
Answer:
Subtract 75872 from 99895 then you get 24023.
Explanation:
Subtract the ones:
By subtracting 2 from 5 we get 3.
Subtract the tens:
By subtracting 7 from 9 we get 2.
Subtract the hundreds:
By subtracting 8 from 8 we get 0.
Subtract the thousands:
By subtracting 5 from 9 we get 4.
Subtract the ten thousand:
By subtracting 7 from 9 we get 2.
c.
Answer:
Subtract 6342 from 7001 then you get 659.
Explanation:
Subtract the ones:
By subtracting 2 from 1 is not possible, So, take the borrow from tens.
11 – 2 = 9.
Subtract the tens:
By subtracting 4 from 9 we get 5.
Subtract the hundreds:
By subtracting 3 from 9 we get 6.
Subtract the thousands:
By subtracting 6 from 6 we get 0.
d.
Answer:
Subtract 714 from 9723 then you get 9009.
Explanation:
Subtract the ones:
By subtracting 4 from 3 is not possible, So take borrow from tens place.
13 – 4 = 9.
Subtract the tens:
By subtract the 1 form 1 we get 0.
Subtract the hundreds:
By subtract the 7 from 7 we get 0.
Subtract the thousands:
By subtract 0 from 9 we get 9.
e.
Answer:
Subtract 7910 from 26819 then you get 18909.
Explanation:
Subtract the ones:
By subtracting 0 from 9 we get 9.
Subtract the tens:
By subtracting 1 from 1 we get 0.
Subtract the hundreds:
By subtracting 9 from 8 is not possible, So take the borrow from thousands,
18 – 9 = 9.
Subtract the thousands:
By subtracting 7 from 5 is not possible, So take the borrow from ten thousand.
15 – 7 = 8.
Subtract the ten thousand:
By subtracting 0 from 1 we get 1.
Question 6.
a.
Answer:
Subtract 1943 from 2519 then you get 576
Explanation:
Subtract the ones:
By subtract 3 from 9 we get 6.
Subtract the tens:
By subtract 4 from 1 is not possible. So, take borrow from hundreds place.
11 – 4 = 7.
Subtract the hundreds:
By subtracting 9 from 4 is not possible. So take borrow from the thousands place.
14 – 9 = 5.
Subtract the thousands:
By subtracting 1 from 1 we get 0.
b.
Answer:
Subtract 1050 from 713 then you get 337.
Explanation:
Subtract the ones:
By subtracting 3 from 0 is not possible, So take borrow from the tens.
Subtract the tens:
By subtracting 1 from 4 we get 3.
Subtract the hundreds:
By subtracting 7 from 0 is not possible. So take borrow from the thousands place.
c.
Answer:
Subtract 70210 from 70462 then you get 252.
Explanation:
Subtract the ones:
By subtracting 0 from 2 we get 2.
Subtract the tens:
By subtracting 1 from 6 we get 5.
Subtract the hundreds:
By subtracting 2 from 4 we get 2.
Subtract the thousands:
By subtracting 0 from 0 we get 0.
Subtract the ten thousands:
By subtract 7 from 7 we get 0.
d.
Answer:
Subtract 8619 from 51372 then you get 42753.
Explanation:
Subtract the ones:
By subtracting 9 from 2 is not possible. So take the borrow from tens place.
12 – 9 = 3.
Subtract the tens:
By subtracting 1 from 6 we get 5.
Subtract the hundreds:
By subtracting 6 from 3 is not possible. So take the borrow from thousands.
Subtract the thousands:
By subtracting 8 from 0 is not not possible. So take borrow from the ten thousands place.
10 – 8 = 2.
Subtract the ten thousands:
By subtracting 0 from 4 we get 4.
e.
Answer:
Subtract 17551 from 38982 then you get 21431.
Explanation:
Subtract the ones:
By subtracting 1 from 2 we get 1.
Subtract the tens:
By subtracting 5 from 8 we get 3.
Subtract the hundreds:
By subtracting 5 from 9 we get 4.
Subtract the thousands:
By subtracting 7 from 8 we get 1.
Subtract the ten thousand:
By subtracting 1 from 3 we get 2.
Question 7.
a.
Answer:
Addition of 52873 with 3219 we get 56092.
Explanation:
Add the ones:
By adding 3 with 9 we get 12. Add 1 to the tens place.
Add the tens:
By adding 1, 7 and 1 we get 9.
Add the hundreds:
By adding 8 with 2 we get 10. Add 1 to the thousands place.
Add the thousands:
By adding 1, 2 and 3 we get 6.
Add the ten thousands:
By adding 5 with 0 we get 5.
b.
Answer:
Addition of 4872 with 1356 we get 6228.
Explanation:
Add the ones:
By adding 2 with 6 we get 8.
Add the tens:
By adding 7 with 5 we get 12. Add 1 to the hundreds place.
Add the hundreds:
By adding 1, 8 and 3 we get 12. Add 1 to the thousands place.
Add the thousands:
By adding 1, 4 and 1 we get 6.
c.
Answer:
Addition of 80972 with 7321 we get 88293.
Explanation:
Add the ones:
By adding 2 with 1 we get 3.
Add the tens:
By adding 7 with 2 we get 9.
Add the hundreds:
By adding 9 with 3 we get 12. So, add 1 to the thousands place.
Add the thousands:
By adding 1, 0 and 7 we get 8.
Add the ten thousands:
By adding 8 with 0 we get 8.
d.
Answer:
Addition of 7298 with 753 we get 8051.
Explanation:
Add the ones:
By adding 8 with 3 we get 11. Add 1 to the tens place.
Add the tens:
By adding 1, 9 and 5 we get 15. Add 1 to the hundreds place.
Add the hundreds place:
By adding 1, 2 and 7 we get 10. Add 1 to the thousands place.
Add the thousands place:
By adding 1 with 7 we get 8.
e.
Answer:
Add 48932 with 30942 we get 79874.
Explanation:
Add the one:
By adding 2 with 2 we get 4.
Add the tens:
By adding 3 with 4 we get 7.
Add the hundreds:
Add 9 with 9 we get 18. So, add 1 to the thousands place.
Add the thousands:
Add 1, 8 and 0 we get 9.
Add the ten thousands:
Add 4 with 3 we get 7.
Question 8.
a.
Answer:
Subtract 519 from 4962 then you get 4443.
Explanation:
Subtract the ones:
By subtracting 9 from 2 is not possible, So take borrow from the tens place.
12 – 9 = 3.
Subtract the tens:
By subtracting 1 from 5 we get 4.
Subtract the hundreds:
By subtracting 5 from 9 we get 4.
Subtract the thousands:
By subtracting 0 from 4 we get 4.
b.
Answer:
Subtract 53973 from 59782 then you get 5809.
Explanation:
Subtract the ones:
By subtracting 3 from 2 is not possible. So, take the borrow from tens place.
Subtract the tens:
By subtracting 7 from 7 we get 0.
Subtract the hundreds:
By subtracting 9 from 7 is not possible, So take the borrow from thousands.
Subtract the thousands:
By subtracting 3 from 8 we get 5.
Subtract the ten thousands:
By subtracting 5 from 5 we get 0.
c.
Answer:
Subtract 8521 from 87752 then you get 79231.
Explanation:
Subtract the ones:
By subtracting 1 form 2 we get 1.
Subtract the tens:
By subtracting 2 from 5 we get 3.
Subtract the hundred:
By subtracting 5 from 7 we get 2.
Subtract the thousand:
Subtract the 8 from 7 is not possible. So, take the borrow from ten thousands place.
17 – 8 = 9
By subtracting 0 from 7 we get 7.
d.
Answer:
Subtract 6581 from 7495 then you get 914.
Explanation:
Subtract the ones:
By subtracting 1 from 5 we get 4.
Subtract the tens:
By subtracting 8 from 9 we get 1.
Subtract the hundreds:
By subtracting 5 from 4 is not possible, So take the borrow from thousands place.
Subtract the thousands:
By subtracting 6 from 6 we get 0.
e.
Answer:
Subtract 2513 from 9325 then you get 6812.
Explanation:
subtract the ones:
By subtracting 3 from 5 we get 2.
Subtract the tens:
By subtracting 1 from 2 we get 1.
Subtract the hundreds:
By subtracting 5 from 3 is not possible, So take borrow from the thousands.
13 – 5 = 8.
Subtract the thousands:
By subtracting 2 from 8 we get 6.
Solve each problem.
Question 9.
Reva’s doctor wants her to walk more for exercise. She has to walk 10,000 steps daily. On Saturday, she only walked 8,972 steps. How many more steps did Reva need to walk?
She needed to walk ____ more steps.
Answer:
Given that,
She has to walk 10,000 steps daily.
On Saturday, she only walked 8,972 steps.
The more steps that Reva need to walk is 10,000 – 8,972 = 1,028.
Therefore She needed to walk 1,028 more steps.
Question 10.
Curtis wanted to paint his bedroom either blue or green. At the paint store, there were 785 shades of blue and 685 shades of green. How many color choices did Curtis have?
Curtis had ____ color choices.
Answer:
Given that,
At the paint store, there were 785 shades of blue
And 685 shades of green.
The color choices that Curtis have is 785 + 685 = 1,470.
Therefore Curtis had 1,470 color choices.
Question 11.
Clare collects stamps from around the world. She has 2,315 stamps so far, but her goal is to have 5,500 stamps. How many more stamps does she need to complete her collection?
She needs ___ more stamps.
Answer:
Given that,
She has 2,315 stamps so far.
But her goal is to have 5,500 stamps.
The number of steps that she need to complete her collection is 5,500 – 2,315 = 3,185.
Therefore She needs 3,185 more stamps.
Question 12.
John’s brother is in high school and needs to write a 1,500-word report on pollution. He has 842 words in the report so far. How many more words does he need?
He needs ____ more words.
Answer:
Given that,
John’s brother is in high school and needs to write a 1,500-word report on pollution.
He has 842 words in the report so far.
The number of words he needed is 1,500 – 842 = 658.
Therefore He needs 658 more words.
Question 13.
The hospital’s service elevator can hold 12,560 pounds. A technician and equipment weigh 752 pounds. How much more weight can the elevator hold?
The elevator can hold ___ more pounds.
Answer:
Given that,
The hospital’s service elevator can hold 12,560 pounds.
A technician and equipment weigh 752 pounds.
The weight can be elevator is 12,560 – 752 = 11,808.
Therefore The elevator can hold 11,808 more pounds.