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 13.1 Answer Key Record Related Facts.

## Texas Go Math Grade 1 Lesson 13.1 Answer Key Record Related Facts

**Explore**

Listen to the problem. Model with . Draw . Write the number sentence.

________ + _________ = __________

________ – _________ = __________

Answer:

FOR THE TEACHER • Read the following problem for the left box. Colin has 7 crackers. He sets 1 more cracker. How many crackers does Colin have now? Then read the following for the right box. Colin has 8 crackers. He gives one to Jacob. How many crackers does Colin have now?

Answer:

**Math Talk**

**Mathematical Processes**

Explain how your model helps you write your number sentence.

Answer:

**Model and Draw**

How can one model help you write four related facts?

Answer:

**Share and Show**

Use . Add or subtract. Complete the related facts.

Question 1.

8 + _________ = 15

7 + 8 = _________

15 – 7 = __________

_________ – _________ = __________

Answer:

8 + 7 = 15

7 + 8 = 15

15 – 7 = 8

15 – 8 = 7

Question 2.

________ + 9 = 14

9 + 5 = ___________

14 – __________ = 5

_________ – _________ = __________

Answer:

5 + 9 = 14

9 + 5 = 14

14 – 9 = 5

14 – 5 = 9

Question 3.

7 + _________ = 13

6 + 7 = ____________

13 – 6 = __________

_________ – _________ = __________

Answer:

7 + 6 = 13

6 + 7 = 13

13 – 6 = 7

13 – 7 = 6

**Problem Solving**

Use . Add or subtract. Complete the related facts.

Question 4.

________ + 8 = 13

8 + 5 = ____________

13 – __________ = 5

_________ – _________ = __________

Answer:

5 + 8 = 13

8 + 5 = 13

13 – 8 = 5

13 – 5 = 8

Question 5.

**H.O.T.** Circle the number sentence that has a mistake. Correct it to complete the related facts.

7 + 9 = 16

16 + 9 = 7

9 + 7 = 16

16 – 7 = 9

Answer:

Question 6.

**H.O.T. Multi-Step** Choose three numbers to make related facts. Choose numbers between 0 and 18. Write your numbers. Write the related facts.

Answer:

**Daily Assessment Task**

**Choose the correct answer.**

Question 7.

Use to count.

Aunt Kay makes 6 instruments. Matt and Karen give her 3 more. Which completes the related facts?

6 + 3 = 9

3 + 6 = 9

9 – 6 = 3

___________

(A) 9 + 3 = 12

(B) 9 – 3 = 6

(C) 6 + 6 = 12

Answer:: The correct answer is option – B

9 – 3 = 6

Question 8.

**Analyze** Pete has 13 pencils. One day he uses 8 pencils. Another day he uses the rest. Which completes the related facts?

13 – __________ = 8

________ + 8 = 13

13 – 8 = __________

8 + __________ = 13

(A) 6

(B) 8

(C) 5

Answer:

Given that

The total number of pencils near pete = 13

one day he use pencils = 8

pencils used in another day =13 – 8 = 5

The correct answer is option – C

13 – 5 = 8

5 + 8 = 13

13 – 8 = 5

Question 9.

**Texas Test Prep** Which completes the related facts?

9 + 8 = 17

8 + 9 = 17

17 – 8 = 9

__________

(A) 9 + 9 = 18

(B) 9 – 6 = 3

(C) 17 – 9 = 8

Answer:

The correct answer is option – C

9 + 8 = 17

8 + 9 = 17

17 – 8 = 9

17 – 9 = 8

**TAKE HOME ACTIVITY** • Write an addition fact. Ask your child to write three other related facts.

Answer:

### Texas Go Math Grade 1 Lesson 13.1 Homework and Practice Answer Key

Add or subtract. Color to help you. Complete the related facts.

Question 1.

_______ + 5 = 11

5 + 6 = ________

11 – _________ = 6

__________ – __________ = __________

Answer:

6 + 5 = 11

5 + 6 = 11

11 – 5 = 6

11 – 6 = 5

**Problem Solving**

Circle the number sentence that has a mistake. Correct it to complete the related facts.

Question 2.

6 + 8 = 14

14 – 6 = 8

8 – 6 = 14

14 – 8 = 6

Answer:

**Lesson Check**

**Choose the correct answer.**

Question 3.

Which completes the related facts?

8 + 4 = 12

4 + 8 = 12

12 – 8 = 4

__________

(A) 12 + 4 = 14

(B) 12 – 4 = 8

(C) 4 + 4 = 8

Answer:

12 – 4 = 8 is the related fact.

Option B is the correct answer.

Question 4.

Which completes the related facts?

15 – 7 = __________

7 + __________ = 15

15 – ________ = 7

________ + 7 = 15

(A) 8

(B) 9

(C) 7

Answer:

Number 8 is related to the fact.

Option A is the correct answer.

Question 5.

**Multi-Step** Write the related facts you can make with these 3 numbers: 5, 14, and 9.

Answer: