# Into Math Grade 1 Module 13 Lesson 2 Answer Key Understand and Explain Place Value Addition

We included HMH Into Math Grade 1 Answer Key PDF Module 13 Lesson 2 Understand and Explain Place Value Addition to make students experts in learning maths.

## HMH Into Math Grade 1 Module 13 Lesson 2 Answer Key Understand and Explain Place Value Addition

I Can use place value to add two-digit numbers

How can you represent tens and ones to solve the problem?  Joe and Maria have ___________ rocks.
Have children look at the table. Explain that the numbers show how many rocks each person has in their collection. Read the following: Joe and Maria put their rock collections together. How many rocks do they have? Allow children to choose tools to solve the problem. Have them draw to show their work. Explanation:
Joe has 21 number of rocks
Maria has 46 number of rocks
I drew a quick picture to show the sum of 21 and 46
21 + 46 = 67
Joe and Maria have 67 rocks.

Build Understanding

There are 12 children at the park. Then 26 more children come. How many children are at the park now? Use tools to solve the problem. There are __________ children at the park now. Explanation:
There are 12 children at the park
Then 26 more children come
I drew to show the numbers in tens and ones
The sum of 12 and 26 is 38
So, there are 38 children at the park now.

Turn and Talk Explain how to use tens and ones to add 14 + 26.
14 = 1 ten 4 ones
26 = 2 tens 6 ones
14 + 26 = 3 tens 10 ones
1 ten = 10 ones
3 tens + 1 ten = 4 tens
So, 14 + 26 = 40.

Step It Out

Question 1.
Use tens and ones to add. A. Draw tens and ones to show 46.
THINK: 4 tens 6 ones B. Draw tens and ones to show 28.   D. Solve.  Explanation:
I used tens and ones to add the numbers 46 and 28
I drew to show the numbers in tens and ones
46 + 28 = 74
So, the sum of 46 and 28 is 74.

Check Understanding

Draw to show the numbers. Use tens and ones to add.

Question 1.
Stuart has 34 stickers. He gets 42 more. How many stickers does he have now? __________ stickers Explanation:
Stuart has 34 stickers
He gets 42 more
I drew to show the numbers as tens and ones
34 + 42 = 76
So, Stuart has 76 stickers in all.

Draw to show the numbers. Use tens and ones to add.

Question 2.
Attend to Precision Dani has 44 marbles. Hector has 31 marbles. How many marbles do they have?  __________ marbles Explanation:
Dani has 44 marbles
Hector has 31 marbles
I drew to show the numbers as tens and ones
44 + 31 = 75
So, they have 75 marbles all together.

Question 3.
Solve 28 + 26.  