Excel in your academics by accessing **McGraw Hill Math Grade 3 Answer Key PDF Chapter 2 Test **existing for free of cost.

## McGraw-Hill Math Grade 3 Chapter 2 Test Answer Key

**Add. Write the sum.**

Question 1.

6 + 2 = ___

2 + 6 = ___

Answer:

6 + 2 = 8

2 + 6 = 8

Explanation:

The numbers that we add are called addends

The order of the addends does not matter

The sum does not change

So, 6 + 2 = 2 + 6.

Question 2.

14 + 4 = ___

4 + 14 = ___

Answer:

14 + 4 = 18

4 + 14 = 18

Explanation:

The numbers that we add are called addends

The order of the addends does not matter

The sum does not change

So, 14 + 4 = 4 + 14.

Question 3.

Answer:

Explanation:

The order of the addends does not matter

The sum does not change

So, 13 + 6 = 6 + 13.

Question 4.

Answer:

Explanation:

The order of the addends does not matter

The sum does not change

So, 3 + 12 = 12 + 3.

**Write the missing number.**

Question 5.

12 + 7 = ___ + 12

Answer:

12 + 7 = 7 + 12

Explanation:

The order of the addends does not matter

The sum does not change

The missing number is 7

So, 12 + 7 = 7 + 12.

Question 6.

3 + 6 = 6 + ___

Answer:

3 + 6Â = 6 + 3

Explanation:

The order of the addends does not matter

The sum does not change

The missing number is 3

So, 3 + 6 = 6 + 3.

Question 7.

___ + 4 = 4 + 11

Answer:

11 + 4 = 4 + 11

Explanation:

The order of the addends does not matter

The sum does not change

The missing number is 11

So, 11+ 4 = 4 + 11.

**Add. Be sure to add the numbers in ( ) first.**

Question 8.

2 + (4 + 3)

2 + ___ = ____

(2 + 4) + 3 =

___ + 3 = ___

Answer:

2 + 4 + 3 = 9

Explanation:

2 + (4 + 3) =

2 + 7 = 9

(2 + 4) + 3 =

6 + 3 = 9

So, 2 + 4 + 3 = 9.

Question 9.

(1 + 3) + 11 =

___ + 11 = ___

1 + (3 + 11) =

1 + ___ = ____

Answer:

1 + 3 + 11 = 15

Explanation:

(1 + 3) + 11 =

4 + 11 = 15

1 + (3 + 11) =

1 + 14 = 15

So, 1 + 3 + 11 = 15.

Question 10.

7 + (10 + 1) =

7 + ___ = ___

(7 + 10) + 1 = ___

___ + 1 = ___

Answer:

7 + 10 + 1 = 18

Explanation:

7 + (10 + 1) =

7 + 11 = 18

(7 + 10) + 1 =

17 + 1 = 18

So, 7 + 10 + 1 = 18.

Question 11.

Use objects to help you solve this problem. Karen has a sheet of stickers. There are 14 green stickers, 2 gold stickers, and 3 red stickers on the sheet. How many stickers are there in all? Use ( ) to show two ways to group the addends.

14 + 2 + 3 = ____________

____ + ____ = ____ stickers

14 + 2 + 3 = ____________

___ + ____ = ___ stickers

Answer:

14 + 2 + 3 = 19 stickers

Explanation:

Karen has a sheet of stickers

There are 14 green stickers, 2 gold stickers, and 3 red stickers on the sheet

I grouped the number using ( ) to solve

14 + (2 + 3) =

14 + 5 = 19 stickers

(14 + 2) + 3 =

16 + 3 = 19 stickers

There are 19 stickers in all with Karen.

**Subtract.**

Question 12.

Answer:

Explanation:

The difference of 17 and 3 is 14.

Question 13.

Answer:

Explanation:

The difference of 9 and 1 is 8.

Question 14.

Answer:

Explanation:

The difference of 16 and 4 is 12.

Question 15.

Answer:

Explanation:

The difference of 7 and 6 is 1.

Question 16.

Answer:

Explanation:

The difference of 20 and 10 is 10.

Question 17.

Answer:

Explanation:

The difference of 14 and 14 is 0.

Question 18.

Answer:

Explanation:

The difference of 15 and 4 is 11.

Question 19.

Answer:

Explanation:

The difference of 17 and 12 is 5.

**Subtract. Write the difference. Then write the missing addend in the box.**

Question 20.

11 + = 13

Answer:

11 + 2 = 13

Explanation:

The difference of 13 and 11 is 2

So, the missing number is 2.

Question 21.

15 + = 19

Answer:

15 + 4 = 19

Explanation:

The difference of 19 and 15 is 4

So, the missing number is 4.

**Complete each fact family.**

Question 22.

2 + 6 = ___

____ + ___ = ____

____ – ___ = ____

____ – ___ = ____

Answer:

2 + 6 = 8

6 + 2 = 8

8 – 2 = 6

8 – 6 = 2

Explanation:

Some addition and subtraction facts use the same numbers

They are called fact family

I wrote the fact family for the numbers 2, 6 and 8.

Question 23.

13 – 3 = ___

____ – ___ = ____

____ + ___ = ____

____ + ___ = ____

Answer:

13 – 3 = 10

13 – 10 = 3

10 + 3 = 13

3 + 10 = 13

Explanation:

Some addition and subtraction facts use the same numbers

They are called fact family

I wrote the fact family for the numbers 13, 3 and 10.

Question 24.

Write the fact family that includes 17, 6, and 11.

__ + __ = __ __ – __ = ____

__ + __ = __ __ – __ = ____

Answer:

11 + 6 = 17

6 + 11 = 17

17 – 6 = 11

17 – 11 = 6

Explanation:

Some addition and subtraction facts use the same numbers

They are called fact family

I wrote the fact family for the numbers 17, 6 and 11.

Question 25.

Write the fact family that includes 19, 9, and 10.

__ + __ = __ __ – __ = ____

__ + __ = __ __ – __ = ____

Answer:

9 + 10 = 19

10 + 9 = 19

19 – 9 = 10

19 – 10 = 9

Explanation:

Some addition and subtraction facts use the same numbers

They are called fact family

I wrote the fact family for the numbers 19, 9 and 10.