## Engage NY Eureka Math 1st Grade Module 4 Lesson 8 Answer Key

Core Subtraction Fluency Review Question 1.
8 – 0 = _______
Given two numbers are 8 and 0
By removing zero from 8 we get 8
8-0=8

Question 2.
8 – 1 = _______
Given two numbers are 8 and 1
By removing 1 from 8 we get 7
8-1=7

Question 3.
7 – 7 = _______
Given two numbers are 7 and 7
By removing 7 from 7 we get 0
7-7=0

Question 4.
3 – 3 = _______
Given two numbers are 3 and 3
By removing 3 from 3 we get 3
3-3=0

Question 5.
3 – 2 = _______
Given two numbers are 3 and 2
By removing 2 from 3 we get 1
3-2=1

Question 6.
4 – 2 = _______
Given two numbers are 4 and 2
By removing 2 from 4 we get 2
4-2=2

Question 7.
5 – 2 = _______
Given two numbers are 5 and 2
By removing 2 from 5 we get 3
5-2=3

Question 8.
5 – 3 = _______
Given two numbers are 5 and 3
By removing 3 from 5 we get 2
5-3=2

Question 9.
9 – 2 = _______
Given two numbers are 9 and 2
By removing 2 from 9 we get 7
9-2=7

Question 10.
8 – 2 = _______
Given two numbers are 8 and 2
By removing 2 from 8 we get 6
8-2=6

Question 11.
7 – 2 = _______
Given two numbers are 7 and 2
By removing 2 from 7 we get 5
7-2=5

Question 12.
4 – 4 = _______
Given two numbers are 4 and 4
By removing 4 from 4 we get 0
4-4=0

Question 13.
4 – 3 = _______
Given two numbers are 4 and 3
By removing 3 from 4 we get 1
4-3=1

Question 14.
5 – 4 = _______
Given two numbers are 5 and 4
By removing 4 from 5 we get 1
5-4=1

Question 15.
8 – 3 = _______
Given two numbers are 8 and 3
By removing 3 from 8 we get 5
8-3=5

Question 16.
9 – 3 = _______
Given two numbers are 9 and 3
By removing 3 from 9 we get 6
9-3=6

Question 17.
10 – 3 = _______
Given two numbers are 10 and 3
By removing 3 from 10 we get 7
10-3=3

Question 18.
10 – 4 = _______
Given two numbers are 10 and 4
By removing 4 from 10 we get 6
10-4=6

Question 19.
10 – 2 = _______
Given two numbers are 2 and 10
By removing 2 from 10 we get 8
10-2=8

Question 20.
10 – 8 = _______
Given two numbers are 8 and 10
By removing 8 from 10 we get 2
10-8=2

Question 21.
10 – 7 = _______
Given two numbers are 10 and 7
By removing 7 from 10 we get 3
10-7=3

Question 22.
10 – 6 = _______
Given two numbers are 10 and 6
By removing 6 from 10 we get 4
10-6=4

Question 23.
6 – 6 = _______
Given two numbers are 6 and 6
By removing 6 from 6 we get 0
6-6=0

Question 24.
7 – 7 = _______
Given two numbers are 7 and 7
By removing 7 from 7 we get 7
7-7=0

Question 25.
7 – 6 = _______
Given two numbers are 7 and 6
By removing 6 from 7 we get 0
7-6=0

Question 26.
8 – 8 = _______
Given two numbers are 8 and 8
By removing 8 from 8 we get 0
8-8=0

Question 27.
8 – 7 = _______
Given two numbers are 8 and 7
By removing 7 from 8 we get 1
8-7=1

Question 28.
9 – 9 = _______
Given two numbers are 9 and 9
By removing 9 from 9 we get 0
9-9=0

Question 29.
9 – 8 = _______
Given two numbers are 8 and 9
By removing 8 from 9 we get 1
9-8=1

Question 30.
10 – 9 = _______
Given two numbers are 10 and 9
By removing 9 from 10 we get 1
10-9=1

Question 31.
5 – 5 = _______
Given two numbers are 5 and 5
By removing 5 from 5 we get 0
5-5=0

Question 32.
6 – 5 = _______
Given two numbers are 6 and 5
By removing 5 from 6 we get 1
6-5=1

Question 33.
7 – 5 = _______
Given two numbers are 7 and 5
By removing 5 from 7 we get 2
7-5=2

Question 34.
8 – 5 = _______
Given two numbers are 8 and 5
By removing 5 from 8 we get 3
8-5=3

Question 35.
8 – 4 = _______
Given two numbers are 8 and 4
By removing 4 from 8 we get 4
8-4=4

Question 36.
10 – 5 = _______
Given two numbers are 10 and 5
By removing 5 from 10 we get 5
10+5=5

Question 37.
9 – 5 = _______
Given two numbers are 9 and 5
By removing 5 from 9 we get 4
9-5=4

Question 38.
9 – 4 = _______
Given two numbers are 9 and 4
By removing 4 from 9 we get 5
9-4=5

Question 39.
6 – 3 = _______
Given two numbers are 6 and 3
By removing 3 from 6 we get 3
6-3=3

Question 40.
6 – 4 = _______
Given two numbers are 6 and 4
By removing 4 from 6 we get 2
6-4=2

Question 41.
7 – 3 = _______
Given two numbers are 7 and 3
By removing 3 from 7 we get 4
7-3=4

Question 42.
7 – 4 = _______
Given two numbers are 7 and 4
By removing 4 from 7 we get 3
7-4=3

Question 43.
8 – 6 = _______
Given two numbers are 8 and 6
By removing 6 from 8 we get 2
8-6=2

Question 44.
9 – 6 = _______
Given two numbers are 9 and 6
By removing 6 from 9 we get 3
9-6=3

Question 45.
9 – 7 = _______
Given two numbers are 9 and 7
By removing 7 from 9 we get 2

9-7=2

### Eureka Math Grade 1 Module 4 Lesson 8 Problem Set Answer Key

Question 1.
Draw quick tens and ones to show each number. Label the first drawing as less than (L), greater than (G), or equal to (E) the second. Write a phrase from the word bank to compare the numbers.
a. 20 _____________________ 18
Answer: 20 is greater than 18
First image has 2 tens and second image has 1 ten and 8 ones
That is 20 and 18
So 20>18 b.
2 tens                  3 tens
2 tens _____________________ 3 tens
Answer:2tens is less than 3 tens
First image has 2 tens and second image has 3 ten
3 tens is more than 2 tens
That is 20 and 30
So 2 tens < 3 tens c.
24                        15
24 _____________________ 15
First image has 2 tens4 ones and second image has 1 ten and 5 ones
That is 24 and 15
So 24>15 d.
26                        32
26 _____________________ 32
First image has 2 tens 6 ones and second image has 3 ten and 2 ones
That is 26 and 32
So 26<32 Question 2.
Write a phrase from the word bank to compare the numbers.
36 _____________________ 3 tens 6 ones
1 ten 8 ones _____________________ 3 tens 1 one
38 _____________________ 26
1 ten 7 ones _____________________ 27
15 _____________________ 1 ten 2 ones
30 _____________________ 28
29 _____________________ 32
36 is equal to 3 tens and 6 ones
1 ten 8 ones is less than 3 tens 1 one
38 is greater than 26
1 ten and 7 ones is less than 27
15 is greater than 1 ten and 2 ones
30 is greater than 28
29 is less than 32

Question 3.
Put the following numbers in order from least to greatest. Cross off each number after it has been used.  Question 4.
Put the following numbers in order from greatest to least. Cross off each number after it has been used.  Question 5.
Use the digits 8, 3, 2, and 7 to make 4 different two-digit numbers less than 40. Write them in order from greatest to least.  ### Eureka Math Grade 1 Module 4 Lesson 8 Exit Ticket Answer Key

Question 1.
Write the numbers in order from greatest to least.  Question 2.
Complete the sentence frames using the phrases from the word bank to compare the two numbers.
Word Bank
is greater than
is less than
is equal to

a. 17 __________________________ 24
b. 23 __________________________ 2 tens 3 ones
c. 29 __________________________ 20
a. 17 is less than 24
b. 23 is equal to 2 tens 3 ones
c. 29 is greater than 20

### Eureka Math Grade 1 Module 4 Lesson 8 Homework Answer Key

Question 1.
Draw the numbers using quick tens and circles. Use the phrases from the word bank to complete the sentence frames to compare the numbers. The first one has been done for you.
Word Bank
is greater than
is less than
is equal to

a. Answer: 20 is less than 30
First image has 2 tens  and second image has 3 ten
That is 20 and 30
So 20<30 b. 14                22
14 __________________ 22
First image has 1 ten 4 ones and second image has 2 ten and 2 ones
That is 14 and 22
So 14<22 c. 15               1 ten 5 ones
15 ________________ 1 ten 5 ones
First image has 1 ten 5 ones and second image has 1 ten and 5 ones
That is15 and 15
So 15=15 d. 39                 29
39 _____________________ 29
First image has 3 tens 9 ones and second image has 2 ten and 9 ones
That is 39 and 29
So 39>29 e. 31                 13
31 _____________________ 13
First image has 3 tens 1 oneand second image has 1 ten and 3 ones
That is 31 and 13
So 31>13 f. 23                  33
23 _____________________ 33
First image has 2 tens 3 ones and second image has 3 ten and 3 ones
That is 23 and 33
So 23<33 Question 2.
Circle the numbers that are greater than 28.
32                       29                           2 tens 8 ones                 4 tens                       18 Question 3.
Circle the numbers that are less than 31.
29                3 tens 6 ones                     3 tens                  13                  3 tens 9 ones Question 4.
Write the numbers in order from least to greatest.  Where would the number 27 go in this order? Use words or rewrite the numbers to explain.
Answer: 27 is greater than 23 and less than 30
So 27 willgo between 29 and 23
32,30,29,27,23

Question 5.
Write the numbers in order from greatest to least. Where would the number 23 go in this order? Use words or rewrite the numbers to explain.   