Cost Estimation and Ratio Conversions Challenge for Grade 5

1. Sarah bought 3 meters of ribbon for $12. How much would 5 meters cost if the price stays the same?

• $30

• $25

• $20

• $15

2. A recipe requires 2 liters of milk. If 1 liter costs $1.50, how much will the milk cost for the recipe?

• $3.00

• $2.00

• $4.50

• $1.00

3. A toy costs $15 for 2 pieces. How much would it cost for 5 pieces?

• $45.00

• $25.00

• $30.00

• $37.50

4. If 1 gallon of paint covers 400 square feet and costs $25, how much would it cost to cover 800 square feet?

• $100

• $50

• $25

• $75

5. A car rental company charges $30 per day. If you rent a car for 4 days, what will be the total cost?

• $150

• $90

• $100

• $120

6. A bag of flour weighs 2 kilograms and costs $4. How much would 5 kilograms of flour cost?

• $12

• $10

• $8

• $6

7. If 3 pounds of apples cost $6, how much would 10 pounds cost?

• $15

• $12

• $20

• $25

8. A book costs $20. If you buy 3 books, what is the total cost?

• $60

• $40

• $80

• $100

9. A water bottle holds 500 milliliters and costs $2. How much would it cost for 2 liters?

• $10

• $6

• $4

• $8

10. If a 1.5-liter soda bottle costs $3, how much would 4.5 liters cost?

• $12

• $9

• $7.50

• $6