We included **HMH Into Math Grade 1 Answer Key PDF** **Module 12 Lesson 4 Use a Hundred Chart to Add **to make students experts in learning maths.

## HMH Into Math Grade 1 Module 12 Lesson 4 Answer Key Use a Hundred Chart to Add

I Can use a hundred chart to add two-digit numbers with one-digit numbers or multiples of ten.

**Spark Your Learning**

Meg has some toy rings. She gets 20 more rings. Now she has 50 rings. How can you find how many rings Meg starts with?

Meg starts with _________ rings.

Read the problem above aloud. Have children choose tools and solve the problem.

Answer:

Explanation:

Meg has some toy rings

She gets 20 more rings

Now she has 50 rings

I drew to show the difference

50 – 30 = 20

The addition equation that match with the problem is

30 + 20 = 50

So, Meg starts with 30 rings.

**Build Understanding**

Question 1.

How can you use a hundred chart to solve these problems?

A. There are 5 blue hats and 22 red hats. How many hats are there altogether?

Equation: _____________

_____________ hats

Answer:

Explanation:

I drew to show the sum in the hundreds chart

I colored the numbers to show their sum

There are 5 blue hats and 22 red hats

5 + 22 = 27

So, there are 27 hats altogether.

B. Carol sees 16 red hats and 6 yellow hats in a store. How many red and yellow hats does she see?

__________ hats

Explain how you counted on by ones.

Answer:

Explanation:

I drew to show the sum in the hundreds chart

I colored the numbers to show their sum

Carol sees 16 red hats and 6 yellow hats in a store

16 + 6 = 22

So, Carol has 22 hats in all.

**Turn and Talk** How can you use the hundred chart to add 16 + 60?

Answer:

Explanation:

I drew to show the sum in the hundreds chart

I started at 16

Moved 6rows down to add 60

So, 16 + 60 = 73

So, the sum of 16 and 60 is 76.

**Step It Out**

Use a hundred chart to add tens to a number.

Question 1.

Solve 40 + 28 = __________.

A. Circle the number 28.

Answer:

I drew a circle around the number 28.

B. Add 4 tens.

THINK: Count by tens. Move down 4 rows.

Answer:

I moved down by 4 rows

C. Write the sum.

40 + 28 = __________

Answer:

40 + 28 = 68.

Explanation:

I drew to show the sum in the hundreds chart

I started at 28

Moved 4 rows down to add 40

So, 40 + 28 = 68

So, the sum of 40 and 28 is 68.

**Use the hundred chart to solve.**

Question 2.

62 + 30 = __________

Answer:

Explanation:

I drew to show the sum in the hundreds chart

I started at 62

Moved 3 rows down to add 30

So, 62 + 30 = 92

So, the sum of 62 and 30 is 92.

Question 3.

__________ = 35 + 20

Answer:

Explanation:

I drew to show the sum in the hundreds chart

I started at 35

Moved 2 rows down to add 20

So, 35 + 20 = 55

So, the sum of 35 and 20 is 55.

**Check Understanding**

**Use the hundred chart to solve.**

Question 1.

Sarah has 5 crayons. Marc has 24 crayons. How many crayons do they have together?

Equation: __________

__________ crayons

Answer:

Explanation:

Sarah has 5 crayons. Marc has 24 crayons

I drew to show the sum in the hundreds chart

I started at 24

Moved 5 columns right to add 5 ones

So, 24 + 5 = 29

Sara and Marc have 29 crayons all together.

**On Your Own**

Use the hundred chart to solve.

Question 2.

**Use Tools** Chris counts 12 cars, and then he counts 6 more. How many cars does he count? Write the equation.

Equation: _____________

Chris counts __________ cars.

Answer:

Explanation:

Chris counts 12 cars, and then he counts 6 more

I drew to show the sum in the hundreds chart

I started at 12

Moved 6 columns right to add 6 ones

So, 12 + 6 = 18

Chris counts 18 cars in all.

Question 3.

**Open-Ended** Evie adds tens to a number and gets a sum of 57. What two numbers could she add?

Numbers: _________ and _________

Answer:

Explanation:

I drew to show the sum in the hundreds chart

I chose a number 27

If i add 3 tens to it

The number will be 27 + 30 = 54

So, the two numbers could be 27 and 30.

**Solve.**

Question 4.

20 + 55 = __________

Answer:

Explanation:

I drew to show the sum in the hundreds chart

I started at 55

Moved 2 rows down to add 20

So, 20 + 55 = 75

So, the sum of 55 and 20 is 75.

Question 5.

__________ = 22 + 4

Answer:

Explanation:

I drew to show the sum in the hundreds chart

I started at 22

I moved 4 columns right to add 4 ones

22 + 4 = 26

So, the sum of 22 and 4 is 26.

**I’m in a Learning Mindset!**

How did members of my group approach problem 3 differently?

Answer: