Estimating with Decimals: Real-Life Math Challenges

A store sells a pack of gum for $1.29. If you buy 4 packs, estimate the total cost by rounding the price to the nearest dollar. What is your estimate?

• $2.00

• $4.00

• $5.00

• $3.00

Maria has $15.75. She wants to buy a book that costs $9.49. Estimate how much money she will have left after her purchase by rounding the book's price. What is your estimate?

• $5.26

• $7.50

• $6.25

• $8.00

A recipe calls for 2.5 cups of flour. If you want to make 3 batches, estimate how many cups of flour you will need by rounding. What is your estimate?

• 9 cups

• 15 cups

• 12 cups

• 6 cups

Tags

CCSS.5.NBT.B.7

A car travels 125.6 miles on 3.5 gallons of gas. Estimate the miles per gallon by rounding the miles and gallons. What is your estimate?

• 35 miles per gallon

• 30 miles per gallon

• 28 miles per gallon

• 32 miles per gallon

Tags

CCSS.5.NBT.B.7

Tom has $50.25. He spends $18.99 on a video game. Estimate how much money he has left by rounding the cost of the game. What is your estimate?

• Approximately $28.50

• Approximately $40.00

• Approximately $25.00

• Approximately $31.25

A pizza costs $12.99. If you buy 2 pizzas, estimate the total cost by rounding the price. What is your estimate?

• $25

• $26

• $20

• $30

Tags

CCSS.5.NBT.B.7

A farmer harvested 150.75 pounds of apples. He sold 47.3 pounds. Estimate how many pounds he has left by rounding the numbers. What is your estimate?

• 150 pounds

• 100 pounds

• 104 pounds

• 50 pounds

A bottle of juice costs $3.49. If you buy 5 bottles, estimate the total cost by rounding the price. What is your estimate?

• $12.50

• $17.45

• $10.00

• $15.00

Tags

CCSS.5.NBT.B.7

A school has 250.5 students. If 75.2 students are absent, estimate how many students are present by rounding. What is your estimate?

• 180

• 200

• 150

• 176

A toy costs $19.99. If you want to buy 3 toys, estimate the total cost by rounding the price. What is your estimate?

• $70

• $60

• $50

• $40

Tags

CCSS.5.NBT.B.7