Add and Subtract Decimals with Many Non-Zero Digits

John is 59.5 inches tall. His brother is 40.125 inches tall. How much taller than his brother is John? Be sure to type out your answer exactly.

(a)  

A runner has run 1.192 kilometers of a 10-kilometer race. How much farther does he need to run to finish the race? Be sure to type out your exact answer.

(a)  

For the subtraction problem 7.2 - 3.67, select the correct calculation.

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For the subtraction problem 16 - 1.4, select the correct calculation.

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A bag of chocolates is labeled to contain 0.384 pounds of chocolates. The actual weight of the chocolates is 0.3798 pounds. Are the chocolates heavier or lighter than the weight stated on the label?

• heavier

• lighter

A bag of chocolates is labeled to contain 0.384 pounds of chocolates. The actual weight of the chocolates is 0.3798 pounds. What is the difference between the weights?

• 0.0042 ounces

• 0.0052 ounces

• 0.0142 ounces

• 0.1042 ounces

Giselle weighed two different samples of chemical 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?

• 4.6 inches

• 5.4 inches

• 15.4 inches

• 15.6 inches

Matt's wining time in the 200-meter sprint was 26.03 seconds. Ryan's time was 0.45 seconds slower that Matt's. What was Ryan's time?

• 26.58 seconds

• 26.48 seconds

• 25.58 seconds

• 25.48 seconds

Luis bought a bottle of water at the gym for $2.85, including tax. If he paid for it with a $5.00 bill, how much change should he have received?

• $2.15

• $3.15

• $3.85

• $7.85