Practice the questions of **McGraw Hill Math Grade 4 Answer Key** **PDF Chapter 2 Lesson 6 Addition and Subtraction Patterns** to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 4 Answer Key Chapter 2 Lesson 6 Addition and Subtraction Patterns

**Add or subtract
**

**Add or subtract to complete each table**

Question 1.

Answer:

Explanation:

y = 0

=> y + 5 = 0 + 5 = 5.

y = 1

=> y + 5 = 1 + 5 = 6.

y = 2

=> y + 5 = 2 + 5 = 7.

y = 3

=> y + 5 = 3 + 5 = 8.

Question 2.

Answer:

Explanation:

x = 0

=> x + 12 = 0 + 12 = 12.

x = 12

=> x + 12 = 12 + 12 = 24.

x = 24

=> x + 12 = 24 + 12 = 36.

x = 36

=> x + 12 = 36 + 12 = 48.

x = 48

=> x + 12 = 48 + 12 = 60.

x = 60

=> x + 12 = 60 + 12 = 72.

Question 3.

Answer:

Explanation:

a = 30

=> a – 3 = 30 – 3 = 27.

a = 27

=> a – 3 = 27 – 3 = 24.

a = 24

=> a – 3 = 24 – 3 = 21.

a = 21

=> a – 3 = 21 – 3 = 18.

a = 18

=> a – 3 = 18 – 3 = 15.

a = 15

=> a – 3 = 15 – 3 = 12.

Question 4.

Look at problem 2. What does x + 12 mean?

Answer:

It is a constant added with 12.

Explanation:

x + 12 mean:

It is a constant added with 12.