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

## McGraw-Hill My Math Grade 1 Answer Key Chapter 6 Lesson 1 Add Tens

**Explore and Explain**

3 tens + 2 tens = _____________ tens

30 + 20 = ______________

Answer:

Explanation:

3 tens + 2 tens = 7 tens

30 + 20 = 70.

**Teacher Directions:** Use to model. There are 35 people at a baseball game. 3 more people come to the game. How many people are at the game in all? Draw the rods and units that you used. Explain to a classmate how you found the answer.

Answer:

Explanation:

There are 35 people at a baseball game

3 more people come to the game

3 tens = 30

5 ones + 3 ones = 8 ones

So, 35 + 3 = 38.

**See and Show**

Find 20 + 20 by adding the tens.

Helpful Hint

To find 20 + 20, add 2 tens + 2 tens which equals 4 tens or 40.

**Add. Use to help.**

Question 1.

4 tens + 2 tens = ____________ tens

40 + 20 = ____________

Answer:

Explanation:

4 tens + 2 tens = 60 tens

40 + 20 = 60.

Question 2.

6 tens + 1 ten = ____________ tens

60 + 10 = ____________

Answer:

Explanation:

6 tens + 1 tens = 7 tens

60 + 10 = 7

Question 3.

5 tens + 2 tens = ____________ tens

50 + 20 = ____________

Answer:

Explanation:

5 tens + 2 tens = 7 tens

50 + 20 = 70.

Question 4.

7 tens + 2 tens = ____________ tens

70 + 20 = ____________

Answer:

Explanation:

7 tens + 2 tens = 9 tens

70 + 20 = 90.

Question 5.

8 tens + 1 ten = ____________ tens

80 + 10 = ____________

Answer:

Explanation:

8 tens + 1 tens = 9 tens

80 + 10 = 90.

**Talk Math** How does knowing 2 + 5 help you find 20 + 50?

Answer:

If you know 2 + 5 you can find 20 + 50 we can add a zero to the sum of 2 and 5

2 + 5 = 7 So, 20 + 50 = 70.