Solve and Write Subtraction Equations - Our Lady Of Victory Catholic School

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Lesson 3 Homework Practice

Solve and Write Subtraction Equations

Solve each equation using inverse operations and keeping it balanced (as shown in #1). Show all work on lined paper. Check your solution.

1. h ? 5 = 4 +5 +5 h= 9

Check for #1: (Since h = 9, substitute 9 into the original problem and solve.) 9 ? 5 = 4 (Answer checks correctly, because it does actually equal 4.)

2. 6 = c ? 5

3. t ? 7 = 19

4. 5 = j ? 8

5. y ? 1.2 = 4.8

6. a ? 3.2 = 5.5

7. 6.6 = w ? 1.2

8. d ? ! = !

!" !"

9. m ? ! = !!

!" !"

10. b ? ! = 1

!"

11. ALGEBRA What is the value of k if 16 = k ? 9?

12. PARKS The Petrified Forest National Park in Arizona recently expanded their boundaries by 93,533 acres. The original acreage was 125,000. Write and solve a subtraction equation to find the new acreage of the park.

13. AREA The total land area of the United States is about 3,483,511 square miles more than the total land area of Tennessee, which is about 53,927 square miles. Write and solve an equation to find the total land area of the United States.

Course 1 ? Chapter 7 Equations

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