Decimal Mastery: Adding, Subtracting, and Multiplying

Lily bought 3.5 meters of ribbon for $2.75 per meter. How much did she spend in total? If she later found a coupon for $3 off, how much did she pay after using the coupon?

• $5.50

• $7.25

• $4.75

• 6.63

A baker made 4.2 kg of dough. He used 1.5 kg to make bread and 1.8 kg to make pastries. How much dough does he have left?

• 2.5 kg

• 3.0 kg

• 1.2 kg

• 0.9 kg

Tom has 5.6 liters of juice. He poured 1.2 liters into a pitcher and then added 2.5 liters more. How much juice is in the pitcher now?

• 1.0 liter

• 3.7 liters

• 4.8 liters

• 2.5 liters

A book costs $12.99. If Sarah buys 3 books and pays with a $50 bill, how much change will she receive?

• $8.75

• $11.03

• $10.50

• $15.00

A gardener planted 2.5 meters of flowers in one row and 3.75 meters in another. How many meters of flowers did he plant in total?

• 7.50 meters

• 4.25 meters

• 6.25 meters

• 5.00 meters

Emma bought 4.5 kg of apples for $3.20 per kg. If she also bought 2.3 kg of bananas for $1.50 per kg, how much did she spend in total?

• $15.40

• $20.00

• $12.50

• 17.85

A toy costs $15.75. If a store has a sale of 20% off, how much will the toy cost after the discount?

• $12.60

• $10.50

• $13.25

• $14.00

A car travels 12.5 miles per gallon of gas. If it uses 3 gallons for a trip, how many miles did it travel?

• 45 miles

• 25 miles

• 30 miles

• 37.5 miles

A restaurant bill came to $45.60. If a tip of 15% is added, what is the total amount paid?

• $55.20

• $48.00

• $50.00

• $52.44

A school bought 6.4 liters of paint for $4.50 per liter. If they used 2.2 liters for a project, how much paint is left?

• 5.0 liters

• 4.2 liters

• 3.5 liters

• 2.2 liters