We included **HMH Into Math Grade 1 Answer Key PDF** **Module 12 Lesson 1 Represent Adding Tens **to make students experts in learning maths.

## HMH Into Math Grade 1 Module 12 Lesson 1 Answer Key Represent Adding Tens

I Can add multiples of ten with multiples of ten.

**Spark Your Learning**

Start with 2 tens. Toss the number cube and add that many tens. How can you show your work?

First Time

2 tens + _______ tens = _________ tens

Second Time

2 tens + _______ tens = _________ tens

Tell children they will start with 2 tens and then add some more tens. Children toss the number cube and add that many tens. Children should draw to show the addition. Have pairs repeat the activity.

Answer:

First time:

2 tens + 3 tens = 5 tens

Second time:

2 tens + 4 tens = 6 tens.

**Build Understanding**

Question 1.

The Beach Shop has 30 adult sunglasses and 40 child sunglasses. How many sunglasses does the shop have?

A. How can you show the problem?

________ tens + _________ tens = _________ tens

Answer:

3 tens + 4 tens = 7 tens

B. How can you write an equation to solve the problem?

Equation: ____________

Answer:

3 + 4 = 7 is the equation that solve the problem.

Connect to Vocabulary

equations:

80 – 50 = 30

9 = 6 + 3

90 = 60 + 30

C. The shop has _________ sunglasses.

Answer:

The shop has 70 sunglasses.

Explanation:

The Beach Shop has 30 adult sunglasses and 40 child sunglasses

30 is 3 tens, 40 is 4 tens

So, 30 + 40 =

3 tens + 4 tens = 7 tens

There are 70 sun glasses in the shop.

**Turn and Talk** Does your answer make sense? How do you know?

Answer:

Question 2.

A store has 30 large rafts and 50 small rafts. How many rafts does the store have?

A. Use tens to show the problem.

Answer:

3 tens + 5 tens = 8 tens

B. Write an equation to solve the problem.

Equation: __________

Answer:

3 + 5 = 8 is the equation that solves the problem.

C. The store has __________ rafts.

Answer:

The store has 80 rafts.

Explanation:

A store has 30 large rafts and 50 small rafts

30 is 3 tens

50 is 5 tens

3 tens + 5 tens = 8 tens

So, 30 + 50 = 80

The store has 80 rafts in all.

**Check Understanding**

**Draw tens to show the problem. Write an equation to solve.**

Question 1.

Kara has 20 blue marbles. She has 40 purple marbles. How many marbles does Kara have?

Equation: ___________

Kara has __________ marbles.

Answer:

Explanation:

Kara has 20 blue marbles

She has 40 purple marbles

20 + 40 =

2 tens + 4 tens = 6 tens

So, 20 + 40 = 60

Kara has 60 marbles.

**On Your Own**

**Draw tens to show the problem. Write an equation to solve.**

Question 2.

**Model with Mathematics** Marcus has 20 oranges. Sally has 10 oranges. How many oranges do they have?

Equation: _____________

They have ___________ oranges.

Answer:

Explanation:

Marcus has 20 oranges

Sally has 10 oranges

20 is 2 tens

10 is 1 tens

2 tens + 1 ten = 3 tens

20 + 10 = 30

So, they have 30 oranges

Question 3.

**Open-Ended** Jodi has 5 packages of 10 pens each. All the pens in each package are either yellow or blue. How many of each could she have?

Equation: __________

Answer:

20 + 30 = 50

Explanation:

Jodi has 5 packages of 10 pens each

All the pens in each package are either yellow or blue

Question 4.

**Reason** Explain how to show this equation using .

20 + 20 = 40

Answer:

Explanation:

I drew connecting cubes to show the equation 20 + 20 = 40.

**I’m in a Learning Mindset!**

What can I do to become a better learner?

Answer: