Decimals and Estimation: Real-Life Math Challenges

A recipe calls for 3/4 cup of sugar. How many cups of sugar do you need if you want to make 2.5 batches of the recipe? Convert the fraction to a decimal and multiply.

• 2.25 cups

• 1.875 cups

• 1.5 cups

• 2.0 cups

Tags

CCSS.6.NS.B.3

A store sells a pack of 12 pencils for $4.50. How much would 5 packs cost? Estimate the total cost by rounding the price to the nearest dollar before multiplying.

• $25.00

• $30.00

• $20.00

• $22.50

Tags

CCSS.5.NBT.B.7

If a car travels 1/3 of a mile in 0.2 hours, how far will it travel in 1 hour? Convert the fraction to a decimal and divide accordingly.

• 1.665 miles

• 0.5 miles

• 2.0 miles

• 1.2 miles

Tags

CCSS.7.RP.A.1

A gardener needs to plant 2.5 acres of flowers. If each acre costs $1,250, how much will it cost to plant all the flowers? Estimate the total cost by rounding the decimal.

• $2,500

• $4,000

• $5,000

• $3,750

Tags

CCSS.5.NBT.B.7

A bottle holds 1/2 gallon of juice. If you buy 3.5 bottles, how many gallons of juice do you have in total? Convert the fraction to a decimal and multiply.

• 3 gallons

• 1.75 gallons

• 0.5 gallons

• 2.5 gallons

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2

A school has 3/5 of a mile of track. If they want to build 4 tracks of the same length, how many miles of track will they have in total? Convert the fraction to a decimal and multiply.

• 1.5 miles

• 3.2 miles

• 0.8 miles

• 2.4 miles

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

A baker uses 2/3 of a cup of flour for one batch of cookies. How much flour is needed for 4.5 batches? Convert the fraction to a decimal and multiply.

• 1.75 cups

• 3.00 cups

• 4.00 cups

• 2.50 cups

Tags

CCSS.5.NBT.B.7

A book costs $12.75. If you buy 3 books, how much will you spend? Estimate the total cost by rounding the price before multiplying.

• $39

• $25

• $30

• $45

Tags

CCSS.5.NBT.B.7

A car can travel 1/4 of a tank of gas for 0.5 hours. How long can it travel on a full tank? Convert the fraction to a decimal and divide.

• 3 hours

• 1 hour

• 4 hours

• 2 hours

Tags

CCSS.5.NF.B.7A

CCSS.5.NF.B.7C

A farmer has 2.5 acres of land and wants to plant corn on 3/4 of it. How many acres will be planted with corn? Convert the fraction to a decimal and multiply.

• 2.25 acres

• 1.875 acres

• 1.5 acres

• 2.0 acres

Tags

CCSS.6.NS.B.3