Decimal Multiplication: Estimating & Modeling Challenges

A store sells a pack of 2.5 kg of rice for $3.75. How much would 4 packs cost? Estimate the total cost before calculating.

• $10.50

• $12.25

• $18.00

• $15.00

Lily bought 3.2 meters of ribbon for $1.25 per meter. How much did she spend in total? Use a model to represent the multiplication.

• $3.50

• $5.00

• $2.75

• $4.00

A recipe requires 0.5 liters of milk. If you want to make 3 batches, how many liters of milk do you need? Estimate the total before calculating.

• 1.5 liters

• 1 liter

• 0.75 liters

• 2 liters

A car travels 2.4 miles per gallon of gas. If it uses 10 gallons, how many miles can it travel? Use a model to visualize the multiplication.

• 15 miles

• 24 miles

• 20 miles

• 30 miles

A book costs $12.50. If you buy 2.4 books, how much will you spend? Estimate the total cost first.

• $25.00

• $35.00

• $40.00

• $30.00

A gardener plants 1.5 rows of flowers, with 2.3 flowers in each row. How many flowers are planted in total? Use a model to represent this multiplication.

• 3.45

• 1.5

• 2.3

• 4.5

A bottle holds 0.75 liters of juice. If you fill 4 bottles, how much juice do you have? Estimate the total volume before calculating.

• 1.5 liters

• 3 liters

• 4 liters

• 2 liters

A box contains 3.6 kg of apples. If you buy 2 boxes, how many kilograms of apples do you have? Use a model to help visualize the multiplication.

• 5.4 kg

• 8.4 kg

• 6.0 kg

• 7.2 kg

A teacher has 2.5 hours to complete 4 lessons. How much time can she spend on each lesson? Estimate the time per lesson before calculating.

• 45 minutes

• 37.5 minutes

• 60 minutes

• 30 minutes

A fabric store sells 1.2 yards of fabric for $8.00. If you buy 5 yards, how much will it cost? Estimate the total cost before calculating.

• $25.00

• $15.75

• $40.00

• $33.35