All the solutions provided inÂ **McGraw Hill My Math Grade 1 Answer Key PDF Chapter 6 Lesson 5 Add Tens and Ones with Regrouping **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 1 Answer Key Chapter 6 Lesson 5 Add Tens and Ones with Regrouping

**Explore and Explain**

**Teacher Directions:** Use and to model. Abby sees 19 people flying kites. Later, she sees 3 more people flying kites. How many people are flying kites in all? Trace how many. Draw the rods and units you used.

Answer:

Explanation:

I drew rods and units to show the sum

Abby sees 19 people flying kites

Later, she sees 3 more people flying kites

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 2 ones = 22

So, 19 + 3 = 22

Therefore, 22 people are flying kites in all.

**See and Show**

Find 13 + 8.

Step 1:

Count the ones

Step 2:

Circle 10 ones

Step 3:

Regroup 10 ones as 1 ten.

**Circle the ones to show regrouping. Write your answer.**

Question 1.

15 + 5 = ____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 0 ones = 20

So, 15 + 5 = 20.

Question 2.

19 + 4 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 3 ones = 23

So, 19 + 4 = 23.

**Talk Math** Do you always regroup when adding? Explain.

Answer:

Addition with regrouping is done when the sum of the addends exceeds 9 in any of the columns. The columns refer to the place value columns of ones, tens, hundreds.

**On My Own**

**Circle the ones to show regrouping. Write your answer.**

Question 3.

13 + 8 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 1 ones = 21

So, 13 + 8 = 21.

Question 4.

18 + 7 = _____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 5 ones = 25

So, 18 + 7 = 25.

Question 5.

19 + 7 = _______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 6 ones = 26

So, 19 + 7 = 26.

Question 6.

16 + 5 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 5 ones = 21

So, 16 + 5 = 21.

Question 7.

18 + 9 = _____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 7 ones = 27

So, 18 + 9 = 27.

Question 8.

12 + 8 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 0 ones = 20

So, 12 + 8 = 20.

Question 9.

17 + 7 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 4 ones = 24

So, 17 + 7 = 24.

Question 10.

19 + 9 = _____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 8 ones = 28

So, 19 + 9 = 28.

Question 11.

16 + 7 = _____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 3 ones = 23

So, 16 + 7 = 23.

**Problem Solving**

Question 12.

Mrs. Brownâ€™s class went to the zoo. 16 students saw the lions. 8 other students saw the monkeys. How many students went to the zoo in all?

___________ students

Answer:

24 students

Explanation:

Mrs. Brownâ€™s class went to the zoo

16 students saw the lions

8 other students saw the monkeys

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 4 ones = 24

So, 16 + 8 = 24

Therefore, 24 students went to zoo in all.

Question 13.

Sean has 14 video games. He is given 9 more video games. How many video games does Sean have in all?

____________ video games

Answer:

23 video games

Explanation:

Sean has 14 video games

He is given 9 more video games

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 3 ones = 23

So, 14 + 9 = 23

Therefore, Sean have 23 video games in all.

**Write Math** When do you need to regroup? Explain.

Answer:

Regrouping refers to the process of re-arranging numbers to form groups of 10 when adding or subtracting two digit (or larger) numbers.

### McGraw Hill My Math Grade 1 Chapter 6 Lesson 5 My Homework Answer Key

**Practice**

**Circle the ones to show regrouping. Write your answer.**

Question 1.

19 + 7 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 6 ones = 26

So, 19 + 7 = 26.

Question 2.

15 + 8 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 3 ones = 23

So, 15 + 8 = 23.

Question 3.

14 + 9 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 3 ones = 23

So, 14 + 9 = 23.

Question 4.

19 + 5 = _____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 4 ones = 24

So, 19 + 5 = 24.

Question 5.

13 + 7 = ______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 0 ones = 20

So, 13 + 7 = 20.

Question 6.

16 + 6 = _______________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 2 ones = 22

So, 16 + 6 = 22.

Question 7.

There are 16 children in a ballet class. 5 more children join. How many children are in the class now?

______________ children

Answer:

21 children

Explanation:

There are 16 children in a ballet class

5 more children join

16 + 5

16 = 1 ten 6 ones

5 = 5 ones

Add ones

6 ones + 5 ones = 1 ten and 1 one

16 + 5 = 1 tens + 1 ten and 1 ones = 2 tens 1 ones

So, 16+ 5 = 21.

**Test Practice**

Question 8.

Find 15 + 6.

(A) 21

(B) 20

(C) 19

(D) 15

Answer:

(A) 21

Explanation:

15 + 6 =

Add ones

5 + 6 = 11

Regroup 10 ones as 1 ten

So, 15 + 6 = 21.

**Math at Home** Ask your child to explain how to find 12 + 9.

Answer:

12 + 9 = 21

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 1 ones = 21

So, 12 + 9 = 21.