Friday 21st: Decimals word problems

The total cost of a trip is $1067.50. The class has raised $819.24. How much more do they need?

• $1886.74

• $248.26

• $250.00

• $712.49

The Taipei 101 tower is 0.509 km tall. The Sears Tower in Chicago is 0.442 km. What is the difference in their heights.

• 1.67 km

• 0.67 km

• 0.951 km

• 0.067 km

Richard needs 10.5 kg of flour. He has 5.17 kg in one bag and 5.2 kg in another. Does Richard have enough flour?

• Yes, he does

• No, he does not

Giselle weighed two different samples of chemicals in her science class. The first sample weighed 39.05 grams. The second weighed 56.7 grams. She then mixed the two chemicals together. What was the weight of the combined samples?

• 17.65 grams

• 44.72 grams

• 85.85 grams

• 95.75 grams

Lacy and Gerald gave their heights for a school survey. Lacy’s height is 51.25 inches. Gerald’s height is 46.65 inches. How many inches taller is Lacy than Gerald?

• 15.6 inches

• 15.4 inches

• 5.4 inches

• 4.6 inches

Xavier spent $15.68 on a shirt, $29.67 on shoes, and $14.95 on pants. How much did he spend?

• 48.20
• 48.40
• 59.20
• 60.30

Allison worked 7.45 hr on Monday and 5.21 hr on Friday. How many total hours did she work?

• 12.66
• 13.56
• 12.49
• 13.59

Quint made a cake with 2 cups of flour and 1.75 cups of sugar. How many total cups did he use? 

• 2.75
• 1.87
• 1.77
• 3.75

Ellie buys some craft supplies. The supplies cost a total of $6.43. She pays with a $20 bill. How much change does she receive?

• $135.7

• $13.57

• $13.75

• 13.75

During a science experiment, Marcus found the mass of two rocks to be 31.6 grams and 45.2 grams. What is the total mass of these two rocks?

• 14.4

• 14.8

• 74.8

• 76.8