Refer to our Texas Go Math Grade 1 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 1 Lesson 7.2 Answer Key Think Addition to Subtract.

## Texas Go Math Grade 1 Lesson 7.2 Answer Key Think Addition to Subtract

**Essential Question**

How can you use an addition fact to find the answer to a subtraction fact?

Explanation:

The basic facts of addition are those equations in which two single-digit numbers are combined by addition to give a sum Hence they range from 0+0=0 to 9+9=18. For each basic addition fact there is a related basic subtraction fact, for example, 18-9=9.

**Explore**

Use to model the problem.

Draw to show your work.

What is 12 – 5 ?

5 + ___ = 12

12 – 5 = ___

**For The Teacher**

- Read the following problems. Joey had 5 cubes. Sarah gave him more cubes Now Joey has 12 cubes. How many cubes did Sarah give him? Children use the top workspace to solve. Then have children solve this problem: Joey had 12 cubes. He gave Sarah 5 cubes. How many cubes does Joey have flow?

**Math Talk**

**Mathematical Processes**

Explain how 5 + 7 = 12 can help you find 12 – 5.

Explanation:

5 + 7 = 12

12 – 5 = 7

This type of equations are called subtraction facts.

**Model and Draw**

What is 9 – 4?

Explanation:

**Share and Show **

Use to add and to subtract.

Question 1.

What is 8 – 6?

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

Question 2.

What is 8 – 4?

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

Question 3.

‘What is 10 – 4?

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

Question 4.

What is 12 – 6?

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

**Problem Solving**

**Use to add and to subtract.**

Question 5.

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

Question 6.

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

Question 7.

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

**Solve.**

Question 8.

**H.O.T.** Carol can use an addition sentence to write a subtraction sentence. Write a subtraction sentence she can solve using 6 + 8 = 14.

Answer:

6 + 8 = 14

14 – 8 = 6

Explanation:

a subtraction sentence she can solve using 6 + 8 = 14.

Question 9.

**H.O.T. Multi-Step** Write two addition sentences Carol can use to help her solve 13 — 9.

Answer:

Explanation:

Carol used this two addition sentences

9 + 4 = 13

4 + 9 = 13 to solve the subtraction sentence

13 – 9 = 4

**Daily Assessment Task**

**Choose the correct answer.**

Question 10.

**Analyze** Which addition sentence helps you solve the problem? Fritz buys 12 balloons for the party. 5 balloons are red. The rest are green. How many balloons are green?

(A) 2 + 3 = 5

(B) 5 + 7 = 12

(C) 6 + 6 = 12

Answer: B

Explanation:

5 + 7 = 12 helps you solve the problem.

Fritz buys 12 balloons for the party. 5 balloons are red. The rest are green.

12 – 5 = 7

7 balloons are green

Question 11.

Which addition sentence helps you solve the problem?

Ben had 9 toy cars. He gave away 3 toy cars. How many toy cars does Ben have now?

(A) 3 + 6 = 9

(B) 8 + 1 = 9

(C) 9 + 3 = 12

Answer: A

Explanation:

Ben had 9 toy cars. He gave away 3 toy cars.

9 – 3 = 6

6 toy cars that Ben have now

Question 12.

Which subtraction sentence can you solve using 7 + 6 = 13?

(A) 7 – 6 = ____

(B) 13 – 6 = ___

(C) 13 – 8 = ____

Answer: B

Explanation:

13 – 6 = 7 is the subtraction sentence

which is derived from the addition fact.

Question 3.

**Texas Test Prep** Which addition sentence helps you solve 10 — 7?

(A) 3 + 4 = 7

(B) 5 + 5 = 10

(C) 7 + 3 = 10

Answer: C

Explanation:

7 + 3 = 10 is the addition sentence which is derived

from the subtraction sentence

10 – 7 =3

**Take Home Activity**

• Write 5 + 4 = __, and ask your child to write the sum Have him or her explain how to use 5 + 4 = 9, to solve, __ – 4 = 5, and then write the answer.

Explanation:

5 + 4 = 9

9 – 4 = 5

Are the facts of addition and subtraction.

### Texas Go Math Grade 1 Lesson 7.2 Homework and Practice Answer Key

**Complete the addition. Then subtract.**

Question 1.

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

Question 2.

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

Question 3.

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

Question 4.

Answer:

Explanation:

used an addition fact to find the answer to a subtraction fact

**Problem Solving**

Question 5.

**Multi-Step** Write two addition sentences Claire can use to help solve 14 — 5.

Answer:

Explanation:

The above 2 equations are addition sentences

derived from subtraction sentences.

**Texas Test Prep**

**Lesson Check**

**Choose the correct answer.**

Question 6.

Which addition sentence helps you solve the problem?

There are 11 balls. 6 are footballs. The rest are soccer balls. How many balls are soccer balls?

(A) 4 + 7 = 1

(B) 6 + 5 = 11

(C) 3 + 3 = 6

Answer: B

Explanation:

There are 11 balls. 6 are footballs.

11 – 6 = 5

The rest are soccer balls.

5 balls are soccer balls

Question 7.

Which addition sentence helps you solve the problem?

Bailey had 13 purses. She gave away 5 purses. How many purses does she have now?

(A) 5 + 6 = 11

(B) 9 + 5 = 14

(C) 5 + 8 = 13

Answer: C

Explanation:

Bailey had 13 purses. She gave away 5 purses.

13 – 5 = 8

8 purses that she have now

Question 8.

Which subtraction sentence can you solve using 8 + 6 = 14?

(A) 8 – 6 = 2

(B) 14’ – 6 = 8

(C) 14 – 7 = 7

Answer: B

Explanation:

14’ – 6 = 8 is the subtraction sentence

that can be used to solve by using 8 + 6 = 14

Question 9.

Which addition sentence can you use to solve 13 – 7?

(A) 7 + 6 = 13

(B) 7 + 4 = 11

(C) 5 + 8 = 13

Answer: A

Explanation:

7 + 6 = 13 is the addition sentence that can be used to solve 13 – 7 = 6