Multiplication of Decimals Study Guide

Elizabeth is making a scale model of the Washington Monument. The Washington Monument is 555 feet tall. If the model is 1/100 the actual size of the Washington Monument, how tall is the model?

• .555 feet tall
• 5.55 feet tall
• 55.5 feet tall

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Madison buys 12.5 acres of land to develop a new set of walking and biking trails. She plans to use 0.25 of the land for baseball fields. How many acres will the builder use for the baseball fields?

• 3.125 acres
• 31.25 acres
• 3,125 acres

Tags

CCSS.6.NS.B.3

Greg is making a shelf to store his collection of rocks and shells. He is using 3 pieces of wood that are each 4.25 feet long. How much wood will Greg use to make the shelf?

• 1275 feet
• 127.5 feet
• 12.75 feet

Tags

CCSS.6.NS.B.3

During a track meet, Maddy drinks 0.7 liter of water. Chloe drinks 0.9 times as much water as Maddy during the track meet. How much water does Chloe drink during the track meet?

• 63 liters
• 6.3 liters
• .63 liters

Tags

CCSS.7.EE.B.3

The library is 0.5 mile from the school. The museum is 0.8 times as far from the school as the library. How far is the museum from the school?

• .4 miles
• 4.0 miles
• 40 miles

Tags

CCSS.7.EE.B.3

Riley works at a local grocery store. He worked 12 hours this week. Last week, he worked 3.5 times as many hours as he worked this week. How many hours did Riley work last week?

• 9.6 hours
• 42 hours
• 22 hours

Tags

CCSS.7.EE.B.3

Brooke always rides her bike to and from school. The total length of a trip to and from school is 4.6 kilometers. Last month, Brooke went to school 20 days. How many kilometers did she ride her bike to and from school last month?

• 9.2 km
• 92 km
• 92 miles

Tags

CCSS.7.EE.B.3

Adian, DJ and Fisher went to an amusement park during their summer vacation. Adian spent $16.25 at the amusement park. DJ spent $3.40 more than Adian spent. Fisher spent 2 times as much money as DJ spent. How much did Fisher spend at the amusement park?

• $110.50
• $39.30
• $25.70

Tags

CCSS.7.EE.B.3

The cost of admission to the Kansas Cosmosphere is $12.50 for each senior citizen, $15.75 for each adult, and $8.25 for each child. Baleigh's family of 2 adults and 3 children plans to spend the day at the Kansas Cosmosphere. What will it cost?

• $63.75
• $49.75
• $56.25

Tags

CCSS.7.EE.B.3

Ava says the product of 0.08 and 0.7 is 5.6. What was her mistake?

• The decimal should be moved 2 places to the left, with the answer of .56
• The decimal should be moved 3 places to the left, with the answer of 0.56
• The decimal should be moved 3 places to the left, with the answer of .056

Tags

CCSS.5.NBT.B.7