We included HMH Into Math Grade 2 Answer Key PDF Module 12 Lesson 1 Represent Regrouping for Addition to make students experts in learning maths.

(I Can) represent the addition of two-digit numbers with and without regrouping.

How can you represent the worms that Maria and Jake see in the garden? How many worms do they see?

Maria and Jake see _________ worms.

Have children work in groups. Read the following problem: Maria sees 9 worms in the garden. Jake sees 15 worms in the garden. How many worms do they see?
Given that,
The total number of worms that Maria sees in the garden is = 9.
The total number of worms that Jake sees in the garden is = 15.
The total number of worms that Maria and Jake see = 9 + 15 = 24.
In this case, you need to regroup the numbers in the addition.
when you add the ones place digits 9 + 5, you get 11 which means 1 ten and 1 ones.
Know to regroup the tens into the tens place and leave the ones.

Build Understanding

Question 1.
Eli reads 26 pages on Saturday. He reads 27 pages on Sunday. How many pages does he read?

A. How can you use tools to show the number of pages Eli reads each night? Draw to show what you did.
Eli reads on Saturday = 26 pages
Eli reads on sonday = 27 pages.

10 ones = 1 ten
There are 5 tens and 3 ones.

B. How many tens and ones are there in all?
________ tens ________ ones
26 + 27 = 53
There are 5 tens and 3 ones.

C. How can you regroup, or trade 10 ones for 1 ten? Use the tools or your drawing to show your work.

Given that 10 ones = 1 ten.
When adding the 2 numbers in the column the addition is greater than 10 then we regroup the 10 ones into 1 ten.

D. How many tens and ones are there now?
_________ tens ________ ones
After regrouping the 10 ones into 1 ten.
There are 1 ten and 0 ones.

E. How many pages does Eli read?
________ pages
Given that,
The total number of books that Eli read on Saturday is = 26
The total number of books that Eli read on Sunday is = 27
There the total number of books that Eli read = 26 + 27 = 53.

Turn and Talk What happens to the number of tens when you regroup 10 ones as 1 ten? Explain.
When you regroup the 10 ones into the 1 ten. We add the carry 1 in the tens place and add the tens place digits with the carry.

Question 2.
Jenni has 34 bird stickers and 7 animal stickers. How many stickers does she have?

A. Add 34 and 7. How can you show the regrouping? Draw to show your work.

34 + 7 = 41
In this case, you need to regroup the numbers in the addition.
when you add the ones place digits 4 + 7, you get 11 which means 1 ten and 1 ones.
Know to regroup the tens into the tens place and leave the ones.

There are 4 tens and 1 one.

B. How many tens and ones are in the sum?
________ tens _________ one
In sum, there are 4 tens and 1 one.

C. Solve the problem. Jenni has _________ stickers
Given that,
The total number of bird stickers near the Jenni = 34
The total number of Animal stickers near the Jenni = 7
Therefore 34 + 7 = 41
Jenni has 41 stickers.

Check Understanding

Question 1.
There are 29 children on a bus. Then 14 children get on the bus. How many children are on the bus now? Use tools or draw to solve. Regroup if you need to.
_________ children
Given that,
The total number of children on a bus = 29.
The total number of children’s get on the bus = 14
Therefore 29 + 14 = 43
In this case, you need to regroup the numbers in the addition.
when you add the ones place digits 9 + 4, you get 13 which means 1 ten and 3 ones.
Know to regroup the tens into the tens place and leave the ones.
29 + 14 = 43
10 ones = 1 ten

Question 2.
Mr. Willis grows 37 carrots. Mr. Jacobs grows 48 carrots. How many carrots do they grow? Use tools or draw to solve. Regroup if you need to.

_________ carrots
Given that,
The total number of carrots that Mr. Willis grow = 37
The total number of carrots that Mr. Jacobs grow is = 48
Therefore 37 + 48 = 85
In this case, you need to regroup the numbers in the addition.
when you add the ones place digits 7 + 8, you get 15 which means 1 ten and 5 ones.
Know to regroup the tens into the tens place and leave the ones.

Question 3.
Use Tools Add 19 and 26. Write how many tens and ones. Write the sum.

_______ tens _______ ones
_________
19 + 26 = 45
In this case, you need to regroup the numbers in the addition.
when you add the ones place digits 9 + 6, you get 15 which means 1 ten and 5 ones.
Know to regroup the tens into the tens place and leave the ones.
There are 3 tens and 15 ones = 45.

I’m in a Learning Mindset!

What helps me finish my work?