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

We included HMH 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.

How can you use the same numbers to show related addition and subtraction facts?   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?  B. How can you use your concrete model to write two related facts about it the butterflies?  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 = ___  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 = ___ 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 = ___ 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 = ___ 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.

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 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 = ___
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 = ___ 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 = ___ 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 = __
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 = ___
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 = ___ 