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

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.

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. 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 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. 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? 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.
I drew a circle around the number 28.

THINK: Count by tens. Move down 4 rows.
I moved down by 4 rows

C. Write the sum.
40 + 28 = __________
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 = __________ 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 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 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.

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. 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 _________ 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 = __________ 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 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?