NAME DATE PERIOD
7-5 Homework Practice
Solve and Write Division Equations
Solve each equation. Check your solution.
1. 5 =r7 2. 6 =j8 3. 7 =k7
4. p4= 12 5. h6= 8 6. s7= 12
7. 11 =r13 8. 14 =a30 9. 12 =q14
10. p15= 9 11. y17= 10 12. b12= 15
13. 4.7 =r5 14. 0.3 =d11 15. 1.9 =r0.3
16. b15= 0.9 17. 1.4 =c1.4 18. 5.3 =d9.2
Write and solve a division equation.
19. POTTERY Dr. Anthro has a piece of Roman pottery that is 954 years old. This is one third as old as a piece of his Grecian pottery. How old is his piece of Grecian pottery?
20. BREAD Mrs. Dinh is dividing a loaf of bread into equal sections for herself, her husband, and their four children. If each person’s serving has 210 Calories, how many Calories are in the loaf?
7-5 Study Guide
Solve and Write Division Equations
Use multiplication to solve division equations.Example 1
Solve x4 = 6.
Method 1: Use models. Method 2: Use symbols.
Model the equation. x4 = 6 Write the equation.
x4 (4) = 6(4) Multiply each side by 4 to
undo the division on the left.
x = 24 Simplify.
There are four equal groups of 6. Multiply. Check x4 = 6 Write the original equation.
6 × 4 = 24 244 ≟ 6 Replace x with 24.
The solution is 24. 6 = 6 The sentence is true. P
Example 2
The Yungs are making 6 payments of $200 on their new television set. What was the cost of the television set?
Words: Total cost divided by 6 is $200.
c6 = 200 Write the equation.
c6 (6) = 200(6) Multiply both sides by 6.
c = 1,200 Simplify.
The total cost of the television was $1,200.
Course 1 • Chapter 7 Equations 113