We included HMH Into Math Grade 1 Answer Key PDF Module 2 Review to make students experts in learning maths.

Vocabulary

Question 1.
Draw lines to match.  Explanation:
I matched the highlighted things in the left with their names.

Concepts and Skills

Count back to subtract.

Question 2.
8 – 2 = ___
8 – 2 = 6

Explanation:
Start at 8
Count back 2
I reach at 6
So, 8 – 2 = 6.

Question 3.
5 – 1 = ___
5 – 1 = 4

Explanation:
Start at 5
Count back 1
I reach at 4
So, 5 – 1 = 4.

Question 4.
___ = 7 – 1
7 – 1 = 6

Explanation:
Start at 7
Count back 1
I reach at 6
So, 7 – 1 = 6.

Question 5.
10 – 3 =___
10 – 3 = 7

Explanation:
Start at 10
Count back 3
I reach at 7
So, 10 – 3 = 7.

Question 6.
12 – 3 = ___
12 – 3 = 7

Explanation:
Start at 12
Count back 3
I reach at 7
So, 12 – 3 = 7.

Question 7.
__ = 9 – 2
9 – 2 = 7

Explanation:
Start at 9
Count back 2
I reach at 7
So, 9 – 2 = 7.

Write addition and subtraction equations to solve.

Question 8.
Darrin has 11 marbles. 6 are small. The rest are big. How many big marbles does he have?
___ + ___ = ___
So, ___ – ___ = ___
___ big marbles
6 + 5 = 11
So, 11 – 6 = 5
5 big marbles

Explanation:
Darrin has 11 marbles. 6 are small
The rest are big
Think if i have 6 how many i need more to have 11
Count up
6 + 5 = 11
Use the addition equation to subtract
11 – 6 = 5
So, there are 5 big marbles.

Fill in the bubble next to the correct answer.

Question 9.
Megan has 9 stickers. She gives 6 to a friend. How many stickers does she have now?
A. 3 stickers
B. 4 stickers
C. 15 stickers
A. 3 stickers

Explanation:
Megan has 9 stickers
She gives 6 to a friend
Start at 6
Count on till 9
I counted 3 more
So, 9 – 6 = 3
Meghan have 3 stickers now.

Question 10.
Jaden has 16 markers. 9 are orange, and the rest are purple. How many markers are purple?
A. 6 markers
B. 7 markers
C. 8 markers
B. 7 markers

Explanation:
9 are orange, and the rest are purple
Make ten to subtract:
16 – 9 =
1 6 – 6 – 3
10 – 3 = 7
So, 16 – 9 = 7
There are 8 purple markers.

Question 11.
There are 13 flowers in a garden. 5 are yellow. The rest are red. How many red flowers are there?
A. 8 red flowers
B. 9 red flowers
C. 18 red flowers
A. 8 red flowers

Explanation:
There are 13 flowers in a garden
5 are yellow
Start at 13
Count back 5
I reach at 8
So, 13 – 5 = 8
There are 8 red flowers.

Question 12.
There are 10 books on the shelf. Claire takes 6 books off the shelf. How many books are on the shelf now? Choose the equation that shows how to model the problem.
A. 10 – 6 = 4
B. 10 – 9 = 1
C. 10 + 6 = 16