# Into Math Grade 1 Module 11 Lesson 2 Answer Key Understand Less Than

We included HMH Into Math Grade 1 Answer Key PDF Module 11 Lesson 2 Understand Less Than to make students experts in learning maths.

## HMH Into Math Grade 1 Module 11 Lesson 2 Answer Key Understand Less Than

I Can use tens and ones to compare two-digit numbers and find which is less.

Choose a number from 51 to 99. Record your number.

Then choose a number you think is less Record the number.

Have children choose a number between 51-99, write their number in the workspace on the left, and draw to show the number. In the workspace on the right, ask children to write a number that they think is less than the number they chose and draw to justify their thinking.

Explanation:
I chose the number 55, it is between 51 and 99.
I drew tens and ones to show my number 55,
A number less than my number is 54
I drew tens and ones on the right to show a number less than my number.

Build Understanding

Question 1.
Sarah collects 51 bottles. Miguel collects 48 bottles. Who collects fewer bottles?

A. How can you use tens and ones to show which number is less?

Explanation:
I drew tens and ones to show the numbers 51 and 48
51 > 48.

B. How does comparing the tens help you decide which number is less?
Comparing the tens help us to decide which number is less.
the number that has smaller number in tens place than the other number is less than the other number.

C. Which number is less?
___________ is less than ___________.
51 is greater than 48.

Connect to Vocabulary

4 is less than 5.

D. ___________ collects fewer bottles.
Miguel collects fewer bottles.

Turn and Talk Jamie says 58 is less than 49 because 9 ones s more than 8 ones. Is Jamie correct? Explain.
No, Jamie is not correct.
When comparing numbers, the number greater tens will be the greater number.
In the same way here 58 has more tens than 48
So, 58 is greater than 48.

Question 2.
A. Draw tens and ones to show which number is less.

Explanation:
I drew tens and ones to show the numbers 70 and 76.

B. Does comparing the tens help you decide which number is less? Why or why not?
No, when compared the tens, as both the number shave same tens we cannot decide which number is greater, we need to compare the ones to decide.

C. ___________ is less than ___________.
76 is greater than 70.

Check Understanding

Compare the numbers to find which is less.

Question 1.
Compare 18 and 35.
___________ is less than ___________.
18 is less than 35

Explanation:
Compare the tens in 18 and 35
The number 35 has more number of tens than 18
So, 18 is less than 35.

Question 2.
Compare 49 and 42.
___________ is less than ___________.
42 is less than 48

Explanation:
Compare the tens in 49 and 42
Both the number has same tens
So, compare ones
9 is greater than 2
So, 42 is less than 49.

Question 3.
Meg sees 28 sunrises in the winter. She sees 32 sunrises in the summer. When does she see fewer sunrises?

Meg sees fewer sunrises in the ____________.
Meg sees fewer sunrises in the winter

Explanation:
Compare the tens in 28 and 32
The number 32 has more number of tens than 28
So, 28 is less than 32.

Question 4.
Construct Arguments Explain why 84 is less than 88.
84 < 88
Both the numbers have same tens so, compare the ones
8 is greater than 4
So, 84 is less than 88.

Compare the numbers to find which is less.

Question 5.
Compare 24 and 72.
___________ is less than ___________.
24 is less than 72.

Explanation:
Compare the tens in 24 and 72
The number 72 has more number of tens than 24
So, 24 is less than 72.

Question 6.
Compare 99 and 89.
___________ is less than ___________.
89 is less than 99

Explanation:
Compare the tens in 99 and 89
The number 99 has more number of tens than 89
So, 89 is less than 99.

Question 7.
Compare 66 and 61.
___________ is less than ___________.
61 is less than 66

Explanation:
Compare the tens in 61 and 66
Both the number has same tens
So, compare ones
6 is greater than 1
So, 61 is less than 66.

Question 8.
Compare 67 and 76.
___________ is less than ___________.