All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 1 Review will give you a clear idea of the concepts.

Vocabulary Check

Complete each sentence.

Question 1.
Joining two parts together makes a ______
Whole
Explanation:
Joining two parts together makes a whole

Question 2.
A ____ is one of the groups that are joined when adding.
part
Explanation:
A part is one of the groups that are joined when adding.

Question 3.
When you ____ two numbers together, you come up with the sum.
Explanation:
When you add two numbers together, you come up with the sum.

Question 4.
Sum
Explanation:

Concept Check

Question 5.  Explanation:
The sum of 7 and 2 is 9
there are 9 broccolis in all.

Question 6. 3 + 3 = 6 Explanation:
The sum of 3 and 3 makes 6
3 green capsicum and 3 red capsicum
3 + 3 = 6 capsicum.

Question 7.
1 + 6 = ____
7
Explanation:
1 + 6 = 7
The sum of 1 and 6 is 7

Question 8.
8 + 0 = ____
8
Explanation:
The sum of 8 and 0 is 8
8 + 0 = 8

Question 9.
3 + 2 = ____
5
Explanation:
The sum of 3 and 2 is 5
3 + 2 = 5

Question 10.
4 + 4 = ____
8
Explanation:
The sum of 4 and 4 is 8
4 + 4 = 8

Question 11.  Explanation:
The sum of 4 and 0 is 4
4 + 0 = 4
when we add zero to a number the number remains the same.

Question 12.  Explanation:
The sum of 3 and 1 is 4
3 + 1 = 4

Question 13.  Explanation:
The sum of 5 and 4 is 9
5 + 4 = 9

Question 14.  Explanation:
The sum of 2 and 6 is 8
2 + 6 = 8

Show a way to make the sum. Color the Write the numbers.

Question 15. _____ + ____ = 6 3 + 3 = 6
Explanation:
The sum of 3 and 3 is 6
3 + 3 = 6

Question 16. _____ + ____ = 5 3 + 2 = 5
Explanation:
The sum of 3 and 2 is 5
3 + 2 = 5

Find the missing part often. Write the number.

Question 17.  Explanation:
The sum of 3 and 7is 10
3 + 7 = 10

Question 18.  Explanation:
The sum of 9 and 1 is 10
9 + 1 = 10

Problem Solving

Question 19.
Liliana finds 3 twigs. Enrique finds 2 twigs. How many twigs do they find in all?
____ + ____ = ____ twigs
3 + 2 = 5
Explanation:
Liliana finds 3 twigs.
Enrique finds 2 twigs.
3 + 2 = 5
5 twigs they find in all.

Determine if the statement is true or false. Circle true or false.

Question 20.
There are 3 bears yawning. 4 more bears begin yawning. There are 8 bears yawning in all.
true false
False.
Explanation:
There are 3 bears yawning.
4 more bears begin yawning.
There are 8 bears yawning in all.
4 + 3 = 7
so, the statement is false.

Test Practice

Question 21.
Miranda sees 6 stars in the sky. Madison sees 3 stars in the sky. How many stars do they see in all?
(A) 2 stars
(B) 3 stars
(C) 9 stars
(D) 10 stars
9 stars.
Explanation:
Miranda sees 6 stars in the sky.
Madison sees 3 stars in the sky.
6 + 3 = 9
9 stars that they see in all.

Reflect  