We included HMH Into Math Grade 1 Answer Key PDF Module 4 Addition and Subtraction Relationship to make students experts in learning maths.
HMH Into Math Grade 1 Module 4 Answer Key Addition and Subtraction Relationship
Birth Nest Math
Find each unknown sum or difference. Write a sum on the nest. Write a difference on the bird.
Answer:
Explanation:
I wrote the sum on the nest and the difference on the bird.
I colored the sums
I colored the rest that is the differences 
If both birds show doubles, I colored them 
Colour the sums 
If both birds show doubles, color them Color the rest of the birds
Turn and Talk
What strategies did you use? Give an example to explain.
Are You Ready?
Complete these problems to review prior concepts and skills you will need for this module.
Add Within 5
Use 
to show the equation. Color to match. Write the sum.
Question 1.
Answer:
Explanation:
I used red and blue cubes to show the equations
To show 2 + 3
I colored 2 cubes red and 3 cubes blue
To show 3 + 2
I colored 3 cubes red and 2 cubes blue
So, 2 + 3 = 3 + 2 = 5.
Count On
Count on to add. Write the sum.
Question 2.
6 + 1 = ___
Answer:
6 + 1 = 7
Explanation:
Start at 6. Count on 1 more
6, 7
So, 6 + 1 = 7.
Question 3.
7 + 2 = ___
Answer:
7 + 2 = 9
Explanation:
Start at 7. Count on 2 more
7, 8, 9
So, 7 + 2 = 9
Question 4.
9 + 3 = ___
Answer:
9 + 3 = 12
Explanation:
Start at 9. Count on 3 more
9, 10, 11, 12
So, 9 + 3 = 12.
Count Back
Count back to subtract. Write the difference.
Question 5.
7 – 3 = ___
Answer:
7 – 3 = 4
Explanation:
Start at 7
Count back 3
7, 6, 5, 4
I reached at 4
So, 7 – 3 = 4.
Question 6.
11 – 2 = __
Answer:
11 – 2 = 9
Explanation:
Start at 11
Count back 2
11, 10, 9
I reached at 9
So, 11 – 2 = 9.
Question 7.
8 – 1 = ___
Answer:
8 – 1 = 7
Explanation:
Start at 8
Count back 1
8 , 7
I reached at 7
So, 8 – 1 = 7.