IM: 7.5.5: Representing Subtraction (Practice) - Newsela Staff | Library

Write each subtraction equation as an addition equation.

1.

a - 9 = 6

2.

p - 20 = -30

3.

z - (-12) = 15

4.

x - (-7) = -10

Find each difference. If you get stuck, consider drawing a number line diagram.

5.

9 - 4

6.

4 - 9

7.

9 - (-4)

8.

-9 - (-4)

9.

-9 - 4

10.

4 - (-9)

11.

-4 - (-9)

12.

-4 - 9

13.

A restaurant bill is $59 and you pay $72. What percentage gratuity did you pay?

Find the solution to each equation mentally.

14.

30 + a = 40

15.

500 + b = 200

16.

-1 + c = -2

17.

d + 3,567 = 0

One kilogram is 2.2 pounds. Complete the tables. What is the interpretation of the constant of proportionality in each case?

18.

Complete the table. What is the interpretation of the constant of proportionality?

19.

Complete the table. What is the interpretation of the constant of proportionality?