# Texas Go Math Grade 2 Lesson 9.2 Answer Key Practice 2-Digit Subtraction

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## Texas Go Math Grade 2 Lesson 9.2 Answer Key Practice 2-Digit Subtraction

Explore

Choose one way to solve the problem. Draw or write to show what you did.

FOR THE TEACHER • Read the following 1 problem and have children choose their own methods for solving it. There are 74 books in Mr Barrows classroom. 19 of the books are about computers. How many of the books are not about computers?
Explanation:
There are 74 books in Mr Barrows classroom.
19 of the books are about computers.
74 – 19 = 55
55 of the books are not about computers

Math Talk
Mathematical Processes

Describe a different way that you could have solved the problem.
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Model and Draw

Carmen had 50 game cards. Then she gave 16 game cards to Theo. How many game cards does Carmen have now? Share and Show

Write the difference.

Question 1.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 2.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 3.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 4.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 5.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 6.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Problem Solving

Write the difference

Question 7.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 8.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 9.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 10.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 11.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 12.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Solve. Write or draw to explain.

Question 13.
H.O.T. Adam takes 38 rocks out of a box. There are 23 rocks left in the box. How many rocks were in the box to start? ____________ rocks
61 rocks
Explanation:
Adam takes 38 rocks out of a box.
There are 23 rocks left in the box.
38 + 23 = 61
61 – 38 = 23
61 rocks were in the box to start

Question 14.
H.O.T. Multi-Step Gwen had 70 cards. She gives 12 cards to Max and 19 cards to Kelly. How many cards does Gwen have now?
____________ cards
39 cards
Explanation:
She gives 12 cards to Max
and 19 cards to Kelly.
19 + 12 = 31
70 – 31 = 39
39 cards that Gwen have now

Question 15.
Analyze Joe counts 26 fish in the tank. Debbie counts 43 fish. How many more fish does Debbie count than Joe?
(A) 17
(B) 7
(C) 27
Explanation:
Joe counts 26 fish in the tank.
Debbie counts 43 fish.
43 – 26 = 17
17 more fish that Debbie count than Joe

Question 16.
There are 42 lions near the water. Then 19 lions walk away. How many lions are still by the water? (A) 23
(B) 13
(C) 33
Explanation:
There are 42 lions near the water.
Then 19 lions walk away.
42 – 19 = 23
23 lions are still by the water

Question 17.
Find each difference. Then circle the problem in which regrouping was needed.  Explanation:
Circled the problem which is needed to regroup

Question 18.
TEXAS Test Prep Lia had 51 toy dinosaurs. She gave 14 toy dinosaurs to her brother. How many toy dinosaurs does she have now? (A) 65
(B) 37
(C) 47
Explanation:
She gave 14 toy dinosaurs to her brother.
51 – 14 = 37
37 toy dinosaurs that she have now

TAKE HOME ACTIVITY • Ask your child to show you one way to find 80- 34.
80 – 34 = 46
Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

### Texas Go Math Grade 2 Lesson 9.2 Homework and Practice Answer Key

Write the difference.

Question 1.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 2.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 3.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 4.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 5.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Question 6.  Explanation:
when we do not have enough ones to subtract
we have to regroup them to tens
then we subtract the ones
then subtract the tens

Problem Solving

Solve. Write or draw to explain.

Question 7.
Shelia has 46 blocks in her toy box. She takes out 28 blocks. How many blocks are left in the toy box?
__________ blocks
18 blocks
Explanation:
Shelia has 46 blocks in her toy box.
She takes out 28 blocks.
46 – 28 = 18
18 blocks are left in the toy box

Question 8.
Multi-Step Vincent hod 60 crayons. He gives 10 crayons to Joel and 19 crayons to Noah. How many crayons does Vincent have now?
_________ crayons
Explanation:
31 crayons
He gives 10 crayons to Joel
and 19 crayons to Noah.
19  + 10 = 29
60 – 29 =  31
31 crayons that Vincent have now

Lesson Check

Question 9.
Gracie had 61 toy animals. She gave 17 toy animals to her sister. How many toy animals does she have now?
(A) 56
(B) 78
(C) 44
Explanation:
She gave 17 toy animals to her sister.
61 – 17 = 44
44 toy animals that she have now

Question 10.
There are 33 elephants near a stream. Then 19 elephants go into the water. How many elephants are not in the water?
(A) 24
(B) 14
(C) 52
Explanation:
There are 33 elephants near a stream.
Then 19 elephants go into the water.
33 – 19 = 14
14 elephants are not in the water

Question 11.
An elephant may live 35 years. A goat may live 8 years. How much longer can an elephant live than a goat?
(A) 37 years
(B) 43 years
(C) 27 years
Explanation:
An elephant may live 35 years.
A goat may live 8 years.
35 – 8 = 27
27 longer can an elephant live than a goat

Question 12.
Ms. Keith took her class to a farm. The class saw 51 chickens and 28 pigs. How many more chickens than pigs did the class see?
(A) 23
(B) 29
(C) 33