We included **H****MH Into Math Grade 1 Answer Key**** PDF** **Module 4 Lesson 3 Identify Related Facts** to make students experts in learning maths.

## HMH Into Math Grade 1 Module 4 Lesson 3 Answer Key Identify Related Facts

I Can tell when addition and subtraction facts are related to each other.

Spark Your Learning

How can you use the same numbers to show related addition and subtraction facts?

Answer:

Explanation:

I chose the number 4 and my partner chose the number 5

So, i wrote all the related facts with the numbers 4 and 5

The sum of 4 and 5 is 9.

Have each child and a partner choose a number from 0 to 10 and write their numbers at the top of the page. Then have them use their numbers to help write four related addition and subtraction facts. Allow partners to choose a tool to help them write the related facts.

**Build Understanding**

There are 15 butterflies in the garden. 9 are blue. The other 6 are orange.

A. How can you use a concrete model to show the butterflies?

Answer:

B. How can you use your concrete model to write two related facts about it the butterflies?

Answer:

C. How do you know the facts are related?

Explanation:

There are 15 butterflies in the garden. 9 are blue. The other 6 are orange

I used cubes to show 9 + 6 = 13

I also wrote the other related fact that is 6 + 9 = 13

The related facts are related as the number are same but their order and operations differ.

**Turn and Talk** What other related facts can you write using the same numbers?

**Step It Out**

1. What related facts does the picture show?

A. Write how many.

B. Complete the facts. Circle the related facts.

6 + 4 = ___ 10 – 4 = ___ 10 + 4 = ___

Answer:

Explanation:

There are 6 green cubes and 4 blue cubes

The addition equation is 6 + 4 = 12

I completed the facts and circled the related facts to the problem.

2. Complete the facts.

Circle the facts if they are related.

THINK: Related facts use the same 3 numbers.

17 – 9 = ___ 8 + 9 = ___

Answer:

Explanation:

I completed the facts using the same 3 numbers

They are related facts so, i circled them.

**Check Understanding Math Board**

**Solve. Then circle the pairs that are related facts.**

Question 1.

8 + 5 = ___

13 – 8 = ___

Answer:

Explanation:

The sum of 8 and 5 is 13 and

The difference of 13 and 8 is 5

The numbers in both the equations are same

So, i circled both the equations as they are related.

Question 2.

3 + 7 = ___

11 – 7 = ___

Answer:

Explanation:

The sum of 3 and 7 is 10 and

The difference of 11 and 7 is 4

The numbers in both the equations are not same

So, i didn’t circle them as they are not related facts.

**On Your Own**

Question 3.

**Reason** 9 turtles are at the pond. 7 of them are on the sand. The other 2 are in the water. Circle two related facts about the turtles.

2 + 7 = 9 9 + 7 = 16 9 – 7 = 2

Answer:

Explanation:

9 turtles are at the pond

7 of them are on the sand

The other 2 are in the water

The addition equation is 7 + 2 = 9

The other related facts are 2 + 7 = 9, 9 – 2 = 7, 9 – 7 = 2

So, i circled all the related facts among the three facts given.

**Solve. Then circle the pairs that are related facts.**

Question 4.

7 + 8 = __

7 – 3 = ___

Answer:

7 + 8 = 14

7 – 3 = 4

Explanation:

The sum of 7 and 8 is 14 and

The difference of 7 and 3 is 4

The numbers in both the equations are not same

So, i didn’t circle them as they are not related facts.

Question 5.

14 – 9 = ___

14 – 5 = ___

Answer:

Explanation:

The difference of 14 and 9 is 5

The difference of 14 and 5 is 9

The numbers in both the equations are same

So, i circled both the equations as they are related.

Question 6.

8 + 8 = ___

16 – 8 = ___

Answer:

Explanation:

The sum of 8 and 8 is 16

The difference of 16 and 8 is 8

The numbers in both the equations are same

So, i circled both the equations as they are related.

Question 7.

4 + 9 = ___

10 – 5 = __

Answer:

4 + 9 = 13

10 – 5 = 5

Explanation:

The sum of 4 and 9 is 13 and

The difference of 10 and 5 is 5

The numbers in both the equations are not same

So, i didn’t circle them as they are not related facts.

Question 8.

7 + 5 = ___

7 – 5 = ___

Answer:

7 + 5 = 12

7 – 5 = 2

Explanation:

The sum of 7 and 5 is 12 and

The difference of 7 and 5 is 2

The numbers in both the equations are not same

So, i didn’t circle them as they are not related facts.

Question 9.

6 + 8 = ___

14 – 6 = ___

Answer:

Explanation:

The sum of 6 and 8 is 14 and

The difference of 14 and 6 is 8

The numbers in both the equations are same

So, i circled both the equations as they are related.

**I’m in a Learning Mindset!**

How does the way my group feels about finding related facts affect my learning?