NBT.7 Review

The school store sells pencils for $0.46 each. How much do 12 pencils cost?

• $1.38

• $5.52

• $13.80

• $55.20

0.7 + 2.8 =

• 9.8

• 7.56

• 3.5

• 2.15

The school parking lot has 6 rows of spaces. There are 12 parking spaces in each row. The principal calculated that there are a total of 72 parking spaces. Which equation below should be used to estimate the answer and decide if the principal’s calculation is reasonable?

• 5 x 10 = 50

• 5 x 20 = 100

• 10 x 10 = 100

• 10 x 20 = 200

Each small square in the model represents one-hundredth of a whole (0.01). Which problem does this model BEST represent?

• 3.2 x 0.6 = 0.192

• 3.2 x 0.6 = 1.92

• 3.2 x 6 = 16.2

• 32 x 0.6 = 19.2

A car rental company charges $0.07 per mile for a rental car. If a customer drives 42 miles, how much will the mileage charge be?

• $2.84

• $2.94

• $284.00

• $294.00

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

Matt’s winning time in the 200-meter sprint was 26.03 seconds. Ryan’s time was 0.45 seconds greater. What was Ryan’s time?

• 25.58 seconds

• 25.68 seconds

• 26.48 seconds

• 26.58 seconds

Peter had 8.75 kg of fruit and Matthew had 5.325 kg of fruit. What was the combined weight of the fruit?

• 6.2 kg

• 13.400 kg

• 14.075 kg

• 62.00 kg

Jeane earned $62.95 every week for babysitting. How much did she earn in 6 weeks?

• $377.70

• $362.40

• $68.95

• $63.01

Lydia is 4.8 feet (ft) tall. She estimates that her home is about four times her height. Which is a reasonable estimate for the height of her home?

• 9 ft

• 16 ft

• 20 ft

• 32 ft