All the solutions provided in **McGraw Hill Math Grade 2 Answer Key PDF Chapter 3 Lesson 3 Add to a Two-Digit Number** will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 2 Answer Key Chapter 3 Lesson 3 Add to a Two-Digit Number

**Explore and Explain**

**Teacher Directions:** Use base-ten blocks to show this addition story. Morgan and her friends are collecting newspapers to recycle. One group collects 7 newspapers. The other group collects 15 newspapers. How many newspapers have they collected in all? Write the number.

Explanation:

**See and Show**

Find 17 + 5.

Step 1

Add the ones.

7 + 5 = 12 ones

Step 2

Regroup if needed. Write how many.

Step 3

Add the tens. 1 ten + 1 ten = 2 tens

**Use Work Mat 6 and base-ten blocks to add.**

Question 1.

Answer:

Explanation:

The sum of 18 and 6 is 24

18 + 6 = 24

Question 2.

Answer:

Explanation:

The sum of 43 and 3 is 46

43 + 3 = 46

Question 3.

Answer:

Explanation:

The sum of 19 and 6 is 25

19 + 6 = 25

Question 4.

Answer:

Explanation:

The sum of 36 and 5 is 41

36 + 5 = 41

Question 5.

Answer:

Explanation:

The sum of 14 and 9 is 23

14 + 9 = 23

**Talk Math** How did you show that you regrouped?

The places of ones will be changed to tens.

**On My Own**

**Use Work Mat 6 and base-ten blocks to add.**

Question 6.

Answer:

Explanation:

The sum of 56 and 1 is 57

56 + 1 = 57

Question 7.

Answer:

Explanation:

The sum of 72 and 8 is 80

72 + 8 = 80

Question 8.

Answer:

Explanation:

The sum of 38 and 8 is 46

38 + 8 = 46

Question 9.

Answer:

Explanation:

The sum of 24 and 4 is 28

24 + 4 = 28

Question 10.

Answer:

Explanation:

The sum of 43 and 9 is 52

43 + 9 = 52

Question 11.

Answer:

Explanation:

The sum of 13 and 7 is 20

13 + 7 = 20

Question 12.

Answer:

Explanation:

The sum of 51 and 9 is 60

51 + 9 = 60

Question 13.

Answer:

Explanation:

The sum of 17 and 6 is 23

17 + 6 = 23

Question 14.

Answer:

Explanation:

The sum of 38 and 4 is 42

38 + 4 = 42

Question 15.

Answer:

Explanation:

The sum of 33 and 7 is 40

33 + 7 = 40

Question 16.

Answer:

Explanation:

The sum of 22 and 9 is 31

22 + 9 = 31

Question 17.

Answer:

Explanation:

The sum of 68 and 3 is 71

**Problem Solving**

Question 18.

Jaya has 25 stickers on her paper. She adds 4 more stickers. How many stickers does Jaya have now?

____ stickers

Answer:

29 stickers

Explanation:

Jaya has 25 stickers on her paper.

She adds 4 more stickers.

25 + 4 = 29

29 stickers that Jaya have now.

Question 19.

Micah does 19 cartwheels. Then he does 8 more. How many cartwheels does Micah do altogether?

Answer:

27 cartwheels

Explanation:

Micah does 19 cartwheels.

Then he does 8 more.

19 + 8 = 27

27 cartwheels that Micah have altogether.

Question 20.

13 children are waiting for the bus. 5 more children get in line for the bus. How many children are waiting for the bus now?

_____ children

Answer:

18 children

Explanation:

13 children are waiting for the bus.

5 more children get in line for the bus.

13+ 5 = 18

18 children are waiting for the bus now.

**Write Math** Explain how you can solve 14 + 7.

Explanation:

14 + 7 = 21

The sum of 14 and 7 is 21.

### McGraw Hill My Math Grade 2 Chapter 3 Lesson 3 My Homework Answer Key

**Practice**

**Add.**

Question 1.

Answer:

Explanation:

The sum of 66 and 6 is 72

66 + 6 = 72

Question 2.

Answer:

Explanation:

The sum of 84 and 3 is 87

84 + 3 = 87

Question 3.

Answer:

Explanation:

The sum of 29 and 4 is 33

29 + 4 = 33

Question 4.

Answer:

Explanation:

The sum of 37 and 9 is 46

37 + 9 = 46

Question 5.

Answer:

Explanation:

The sum of 21 and 9 is 30

21 + 9 = 30

Question 6.

Answer:

Explanation:

The sum of 45 and 6 is 51

45 + 6 = 51

**Add.**

Question 7.

Answer:

Explanation:

The sum of 38 and 3 is 41

38 + 3 = 41

Question 8.

Answer:

Explanation:

The sum of 78 and 7 is 85

78 + 7 = 85

Question 9.

Answer:

Explanation:

The sum of 83 and 8 is 91

83 + 8 = 91

Question 10.

There are 24 students in Ms. Ito’s class. 5 more students join her class. How many students are there now?

_______ students

Answer:

29 students

Explanation:

There are 24 students in Ms. Ito’s class.

5 more students join her class.

24 + 5 = 29

29 students are there now.

Question 11.

Harry coaches 25 children on Wednesday. On Saturday, he coaches 9 more children. How many children does he coach in all?

_____ children

Answer:

34 children

Explanation:

Harry coaches 25 children on Wednesday.

On Saturday, he coaches 9 more children.

25 + 9 = 34

34 children that he coach in all.

Question 12.

There are 54 people that arrive early for the Tigers’ game. 9 people arrive late. How many people came to the game?

(A) 63

(B) 52

(C) 44

(D) 20

Answer:

A

Explanation:

There are 54 people that arrive early for the Tigers’ game.

9 people arrive late.

54 + 9 = 63

63 people came to the game.

**Math at Home** Ask your child to show you how to add I 4 and 8. Then ask your child to show you how to add 27 and 2.

Explanation:

14 + 8 = 22

27 + 2 = 29