All the solutions provided inÂ **McGraw Hill My Math Grade 1 Answer Key PDF Chapter 5 Lesson 2 Tens **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 1 Answer Key Chapter 5 Lesson 2 Tens

**Explore and Explain**

**Teacher Directions:** Place one in each window or the train car. Join the cubes together to make a train. Move this train off the track. Repeat this two more times. Count by tens. Write the number.

Answer:

Explanation:

3 tens is 30

So, The number is 30.

**See and Show**

You can group 10 ones to make a ten.

**Use . Make groups of ten. Count by tens. Write the numbers.**

Question 1.

___________ tens =

Answer:

Explanation:

I counted by 10’s

4 tens = 40.

Question 2.

___________ tens =

Answer:

Explanation:

I counted by 10’s

7 tens = 70.

**Talk Math** How would you use cubes to model the number 100?

Answer:

Explanation:

I drew to show hoe we can model the number 100 using cubes.

**On My Own**

**Use . Make groups of ten. Count by tens. Write the numbers.**

Question 3.

Answer:

Explanation:

I counted by 10’s

2 tens = 20.

Question 4.

Answer:

Explanation:

I counted by 10’s

8 tens = 80.

Question 5.

Answer:

Explanation:

I counted by 10’s

5 tens = 50.

Question 6.

Answer:

Explanation:

I counted by 10’s

9 tens = 90.

Question 7.

Answer:

Explanation:

I counted by 10’s

6 tens = 60.

Question 8.

Answer:

Explanation:

I counted by 10’s

3 tens = 30.

**Problem Solving**

Question 9.

Kelvin has 7 groups of cars. There are 10 cars in each group. How many cars does he have in all?

_______________ cars

Answer:

Explanation:

Kelvin has 7 groups of cars

There are 10 cars in each group

I drew 7 tens rods

I counted by 10’s

7 tens = 70

So, Kelvin has 70 cars in all.

Question 10.

Mrs. Brown is making cookies for the soccer players. There are 4 teams of 10. How many cookies does she need?

_______________ cookies

Answer:

Explanation:

Mrs. Brown is making cookies for the soccer players

There are 4 teams of 10

I drew 4 tens rods

I counted by 10’s

4 tens = 40

So, Mrs. Brown need 40 cookies.

**HOT Problem** Jaden says the pennies show 2 tens. Tell why Jaden is wrong. Make it right.

Answer:

Explanation:

Jaden is wrong 1 of the two groups of pennies do not have 10 pennies

I drew to show the correct one

2 tens = 20.

### McGraw Hill My Math Grade 1 Chapter 5 Lesson 2 My Homework Answer Key

**Practice**

**Count groups of ten. Write the numbers**

Question 1.

Answer:

Explanation:

I counted by 10’s

2 tens = 20.

Question 2.

Answer:

Explanation:

I counted by 10’s

8 tens = 80.

Question 3.

Answer:

Explanation:

I counted by 10’s

7 tens = 70.

Question 4.

Answer:

Explanation:

I counted by 10’s

5 tens = 50.

Question 5.

There are 4 boxes. Each box has lo buttons in it. How many buttons are there in all?

____________ buttons

Answer:

Explanation:

There are 4 boxes

Each box has lo buttons in it

I counted by 10’s

4 tens = 40

So, there are 40 buttons in all.

Question 6.

There are 3 vases. Each vase has 10 flowers in it. How many flowers are there in all?

___________ flowers

Answer:

Explanation:

There are 3 vases

Each vase has 10 flowers in it

I counted by 10’s

3 tens = 30

So, there are 30 flowers in all.

**Vocabulary Check**

**Circle the correct answer.**

Question 7.

Which group shows counting by tens?

5, 10, 15, 20, 25

10, 20, 30, 40, 50

Answer:

Explanation:

The second group shows the counts by 10

So, i drew a circle around the second group.

**Math at Home** Give your child several small items such as buttons or pennies to count. Help your child make groups of ten and then Count the items by tens.