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 13.2 Answer Key Identify Related Facts.

## Texas Go Math Grade 1 Lesson 13.2 Answer Key Identify Related Facts

**Explore**

Use to show 4 + 9 = 13.

Draw to show a related subtraction fact.

Write the subtraction sentence.

Answer:

13 – 9 = 4

FOR THE TEACHER • Read the following problem. Brandon walks 9 miles in the morning. He walks 4 miles in the evening. How many miles does Brandon walk in a day? Write the related facts.

Answer:

Given that

Brandon walks in the morning = 9 miles

Brandon walks in the evening = 4 miles

Brandon walk in a day = 9 + 4 = 13

**Math Talk**

**Mathematical Processes**

Explain why your subtraction sentence is related to 4 + 9 = 13.

Answer:

13 – 9 = 4 is related to the 4 + 9 = 13 because in 13 – 9 = 4 the number 9 send to the RHS side then we get 13 = 4 + 9.

**Model and Draw**

Use the pictures. What two facts can you write?

These are related facts. If you know one of these facts, you also know the other fact.

Answer:

3 + 9 = 12

12 – 3 = 9.

**Share and Show**

**Add and subtract. Circle the related facts.**

Question 1.

6 + 4 = _________

10 – 4 =________

Answer:

6 + 4 = 10

10 – 4 = 6

Question 2.

_______ = 9 + 8

________ = 17 – 8

Answer:

17 = 9 + 8

9 = 17 – 8

Question 3.

9 + 5 = __________

9 – 5 = _________

Answer:

9 + 5 = 14

9 – 5 = 4

Question 4.

8 + 7 = ___________

15 – 7 = ___________

Answer:

8 + 7 = 15

15 – 7 = 8

Question 5.

_________ = 9 + 2

_________ = 9 – 2

Answer:

11 = 9 + 2

7 = 9 – 2

Question 6.

6 + 3 = __________

12 – 3 = ___________

Answer:

6 + 3 = 9

12 – 3 = 9

Question 7.

4 + 8 = ___________

12 – 8 = ___________

Answer:

4 + 8 = 12

12 – 8 = 4

Question 8.

_________ = 7 + 6

________ = 13 – 6

Answer:

13 = 7 + 6

7 = 13 – 6

Question 9.

9 + 9 = ___________

18 – 9 = _________

Answer:

9 + 9 = 18

18 – 9 = 9

**Problem Solving**

Question 10.

Use these numbers to write the related facts. 8 9 17

Answer:

8 + 9 = 17

17 – 9 = 8

17 – 8 = 9

Question 11.

**H.O.T.** Which number can not be used to write related number sentences? Explain.

Answer:

9 is used to wi in the related number sentences.

Explanation

15 – 8 = 7

15 – 7 = 8

15 – 6 = 9

Therefore

15 – 9 = 6

So 9 is the related number to the number of sentences

**H.O.T. Multi-Step** Use the numbers to write related addition and subtraction sentences.

Question 12.

Answer:

9 + 5 = 14

12 – 4 = 8

Question 13.

Answer:

7 + 6 = 13

13 – 6 = 7

**Daily Assessment Task**

**Choose the correct answer.**

Question 14.

**Analyze** 11 elephants are washing themselves. Some elephants stop. 5 elephants keep washing themselves. Which fact is not related?

(A) 11 – 6 = 5

(B) 5 + 6 = 11

(C) 6 – 5 = 1

Answer:

Given that

Elephants washing themselves = 11

Elephant keep washing themselves = 5

Some of the elephants are stop = 11 – 5 = 6

Total number of elephants = 11 + 5 = 16

6 – 5 is not related to the fact.

Option C is the correct answer.

Question 15.

9 elephants have their trunks up. 7 elephants do not have their trunks up. Which fact does not belong?

(A) 9 + 7 = 16

(B) 16 – 6 = 10

(C) 16 – 9 = 7

Answer:

Given that

Elephant have their trunks up = 9

Elephant do not have trunks up = 7

Total number of elephants = 16

16 – 6 is not related to the fact.

Question 16.

Jill has a garden. There are 4 roses. There are also 8 tulips. Which fact is not related?

(A) 8 – 4 = 4

(B) 4 + 8 = 12

(C) 12 – 8 = 4

Answer:

Given that

Total number of roses in the Jill garden = 4

Total number of tulips in the Jill garden = 8

Total number of flowers = 8 + 4 = 12

8 – 4 = 4 is not related to the fact.

Question 17.

**Texas Test Prep** Which subtraction fact is related to 6 + 8 = 14?

(A) 14 – 7 = 7

(B) 14 – 8 = 6

(C) 14 – 9 = 5

Answer:

6 + 8 = 14 is related to 14 – 8 = 6

Option B is the correct answer

**TAKE HOME ACTIVITY** • Write 7, 9, 16, +, -, and = on separate slips of paper. Have your child use the slips of paper to show related facts.

Answer:

### Texas Go Math Grade 1 Lesson 13.2 Homework and Practice Answer Key

**Add and subtract. Circle the related facts.**

Question 1.

8 + 5 = _________

13 – 5 = __________

Answer:

8 + 5 = 13

13 – 5 = 8

Question 2.

4 + 3 = __________

10 – 3 = __________

Answer:

4 + 3 = 7

10 – 3 = 7

Question 3.

9 + 4 = ___________

9 – 4 = ___________

Answer:

9 + 4 = 13

9 – 4 = 5

**Problem Solving**

Question 4.

Which number can not be used to write related number sentences? Explain.

5 7 9 14

Answer:

9 + 5 = 141

4 – 5 = 9

Number 7 is not related to the number sentences.

Explanation

In the number sentences adding or subtracting of numbers are related to 5, 9, 14, and number 7 is not related.

**Multi-Step** Use the numbers to write related addition and subtraction sentences.

Question 5.

Answer:

4 + 5 = 9

8 + 5 = 13

Question 6.

Answer:

6 + 9 = 15

7 + 4 = 11

**Lesson Check**

**Choose the correct answer.**

Question 7.

13 squirrels are looking for nuts. Some squirrels stop. 6 squirrels keeping looking for nuts. Which fact is not related?

(A) 13 – 7 = 6

(B) 7 – 6 = 1

(C) 6 + 7 = 13

Answer:

Given that

Total number of squirrels looking for nuts = 13

Some of the squirrels are kept looking for nuts = 6

Total number of squirrels are stopped = 13 – 6 = 7

7 – 6 = 1 is not related

Option B is correct.

Question 8.

8 cats are sleeping. 9 cats are not sleeping. Which fact does not belong?

(A) 9 + 8 = 17

(B) 17 – 9 = 8

(C) 17 – 7 = 10

Answer:

Given that

Total number of cats sleeping = 8

Total number of cats not sleeping = 9

Total number of cats = 8 + 9 = 17

17 – 7 = 10 is not belonging to the fact.

Option C is correct.

Question 9.

Which subtraction fact is related to 8 + 3 = 11?

(A) 8 – 3 = 5

(B) 11 – 7 = 2

(C) 11 – 8 = 3

Answer:

8 + 3 = 11 is related to the subtraction 11 – 8 = 3.

Option C is the correct answer.

Question 10.

**Multi-step** Mike has 5 soccer balls and 7 baseballs. Which number can not be used to write related number sentences with 5 and 7?

(A) 8

(B) 5

(C) 12

Answer:

Given that,

Total number of soccer balls at Mike = 5

Total number of baseball at Mike = 7

Total number of balls = 5 + 7 = 12

The related number sentences with 5 and 7 is 12.

Option C is the correct answer.