We included HMH Into Math Grade 1 Answer Key PDF Module 13 Lesson 6 Practice Two-Digit Addition and Subtraction to make students experts in learning maths.

## HMH Into Math Grade 1 Module 13 Lesson 6 Answer Key Practice Two-Digit Addition and Subtraction

I Can add and subtract with two-digit numbers.

Step It Out

Question 1.
Mia has a number that is 20 less than the number Tom has. Tom has a number with 3 tens and 0 ones. What number does Mia have? THINK: 3 tens 0 ones
The number Tom has is __________.

B. Find the number Mia has.
THINK: The number Mia has is 20 less than the number Tom has.
Equation: ___________

C. The number Mia has is ___________.
Mia has a number that is 20 less than the number Tom has
Tom has a number with 3 tens and 0 ones
3 tens 0 ones is 30
Tom has 30
The number Mia has is 20 less than the number Tom has
30 – 20 = 10
So, the number Mia has is 10.

Question 2.
Tony and Mord pack box lunches for the class picnic. Tony packs 9 more boxes than Marci. Mord packs 26 boxes. How many boxes does Tony pack? A. What information do you need to use?
Marci packs _________ boxes.
Tony packs _________ more boxes than Marci.

B. Will you odd or subtract to solve the problem?

C. Write an equation.

D. Tony packs __________ boxes.
Tony and Mord pack box lunches for the class picnic
Tony packs 9 more boxes than Marci
Mord packs 26 boxes
I will add to find the sum of 26 and 9
26 + 9 =
Start at 26, count on 9 more
I stop at 35
So, 26 + 9 = 35
Tony packs 35 boxes.

Turn and Talk What strategy did you use to solve the problem?

Check Understanding

Question 1.
Jason puts 70 carrots on a plate. Friends eat 50 of them. How many carrots are on the plate now?
__________ carrots
20 carrots

Explanation:
Jason puts 70 carrots on a plate
Friends eat 50 of them
70 – 50 =
Start at 70, count back by 10’s till 50
70 before 60, 50
I counted 2 tens
So, 70 – 50 = 20
20 carrots are on the plate now.

Question 2.
Reason Lexi makes 24 shapes. Kwesi makes 41 shapes. How many shapes do they make together? _________ shapes
65 shapes

Explanation:
Lexi makes 24 shapes
Kwesi makes 41 shapes
24 + 41 =
24 + 1 + 40
25 + 40
Start at 25, count on by 10’s 4 times
I stop at 65
So, 24 + 41 = 65
They make 65 shapes altogether.

Question 3.
Open-Ended Ada reads 55 pages of her book. She reads some before lunch and some after lunch. How many pages could she read at each time?
Equation: __________
__________ pages before lunch
__________ pages after lunch
30 + 25 = 55
30 pages before lunch
25 pages after lunch

Explanation:
She reads some before lunch and some after lunch
30 + 25 = 55
So, she could have read 30 and 25 pages.

Question 4.
__________ = 41 + 9
50 = 41 + 9

Explanation:
41 + 9 =
Start at 41 count 9 more
I reach at 50
The sum of 41 and 9 is 50
So, 41 + 9 = 50.

Question 5.
77 + 8 = __________
77 + 8 = 85

Explanation:
Start at 77, count 8 more
I reach at 85
The sum of 77 and 8 is 85
So, 77 + 8 = 85.

Question 6.  Explanation:
The difference of 50 and 50 is 0
So, 50 – 50 = 0.

Question 7.  Explanation:
The sum of 30 and 48 is 78
30 + 48 = 78.

Question 8.  Explanation:
The difference of 70 and 10 is 60
So, 70 – 10 = 60.

Question 9.  Explanation:
The sum of 24 and 37 is 61
So, 24 + 3 7 = 61.

Question 10.  Explanation:
The sum of 35 and 52 is 87
So, 35 + 52 = 87.

Question 11.  Explanation:
The sum of 38 and 55 is 93
So, 38 + 55 = 93.

Question 12.  Explanation:
The sum of 77 and 22 is 99
So, 77 + 22 = 99.

Question 13.  Explanation:
The difference of 80 and 50 is 30
So, 80 – 50 = 30.

Reason Add or subtract to solve.

Question 14.
Adam has 7 more stickers than Dan. Dan has 37 stickers. How many stickers does Adam have? ___________ stickers
44 stickers

Explanation:
Adam has 7 more stickers than Dan
Dan has 37 stickers
37 + 7 =
Start at 37, count on 7 more
I reach at 44

Question 15.
Mario and Pete each have 40 rocks in their collection. How many rocks do Mario and Pete have?
________ rocks
80 rocks

Explanation:
Mario and Pete each have 40 rocks in their collection
40 + 40 =
Doubles fact:
40 + 40 = 80
So, Mario and Pete have 80 rocks .

Question 16.
Kendra has 50 paper clips. She gives some to Sara. Now Kendra has 20 paper clips. How many does she give to Sara? Does your answer make sense? Explain.
__________ paper clips
30 paper clips

Explanation:
Kendra has 50 paper clips
She gives some to Sara
Now Kendra has 20 paper clips
50 – 20 =
Start at 50 count back by 10’s till 20
I counted 3 tens
30, 40, 50
So, 50 – 20 = 30
Kendra gave 30 paperclips to Sara.

Question 17.
__________ = 30 + 15
45 = 30 + 15

Explanation:
30 + 15 =
Start at 30, count by 5’s
Count 3 times
30 after 35, 40, 45
So, 30 + 15 = 45.

Question 18.
33 + 25 = __________
33 + 25 = 58

Explanation:
Start at 33 count by 5’s
Count 5 times
33, 38, 43, 48, 53, 58
So, 33+ 28 = 58.

Question 19.
___________ = 70 – 40
30 = 70 – 40

Explanation:
Start at 40 count on by 10’s till 70
I counted 3 tens
50, 60, 70
So, 70 – 40 = 30.

Question 20.
28 + 7 = __________
28 + 7 = 35

Explanation:
28 + 7 =
Start at 28, count 7 more
The number is 35
So, 28 + 7 = 35.

Question 21.  Explanation:
The sum of 41 and 58 is 99
So, 41 + 58 = 99.

Question 22.  Explanation:
The difference of 60 and 20 is 40
So, 60 – 20 = 40.

Question 23.  Explanation:
The sum of 22 and 63 is 85
So, 22 + 63 = 85.

Question 24.  