Topic 3: Operations With Decimals Review Question Preview (ID: 28499)


Operations With Decimals Review. TEACHERS: click here for quick copy question ID numbers.

92.2 – ____ is about 64. Which decimal, rounded to the nearest whole number, makes the equation true?
a) 29.5
b) 30.7
c) 27.6
d) 28.9

Estimate the sum of 2.31 + 5.67 by rounding each addend to the nearest tenth.
a) 8.11
b) 7.98
c) 7.9
d) 8.0

Estimate the sum of 4.32 + 9.49 by rounding each addend to the nearest whole number.
a) 13
b) 15
c) 14
d) 12

Patrick went out to lunch. He ordered a salad ($3.75), sandwich($5.00), and drink($1.99). About how much did he spend on food?
a) $10
b) $11
c) $12
d) $13

Manuel hiked the Yellow Trail (1.02 miles) and the Blue Trail (1.86 miles). Estimate the distance he hiked by rounding each distance to the nearest tenth.
a) 3.0 miles
b) 2.8 miles
c) 2.9 miles
d) 3.1 miles

Samantha measured the height of her plant to be 0.248 centimeters. Rebecca’s plant measured 0.354 centimeters. How much greater was Rebecca’s plant’s height than Samantha’s.
a) 0.106
b) 0.114
c) 0.014
d) 0.112

Find the sum. 6.7 + 3.78 =
a) 9.98
b) 9.48
c) 10.48
d) 10.15

Remy bought a bottle of water with a volume of 0.56 L. After Remy drank some of the water there was 0.17 L left. How much water did Remy drink?
a) 0.11 L
b) 0.39 L
c) 0.41 L
d) 0.0 L

Find the difference. 6.54 – 3.88 =
a) 2.77
b) 2.76
c) 2.67
d) 2.66

Juan threw a ball 0.0785 km. Steven threw a ball 0.049 km. How much further did Juan throw the ball than Steven?
a) 0.0145
b) 0.0295
c) 0.0744
d) 0.0044

Which is the best estimate for 49.59 x 6.33?
a) 420
b) 300
c) 275
d) 355

Which is the best estimate for $65.08 divided by $4.97?
a) 11
b) 12
c) 13
d) 14

Estimate 54.08 divided by 6.12 using compatible numbers.
a) 8
b) 9
c) 6
d) 7

Student admission to the zoo is $15.55 per person. What is the best estimate of the cost of admission for 9 students?
a) $144
b) $135
c) $180
d) $172

Each piece of fencing is 1.78 feet wide. Mrs. Kim wants to fence her flower garden which has a total perimeter of 43.58 feet. About how many pieces of fencing does she need?
a) 24
b) 23
c) 22
d) 21

Place the decimal point in the product. 1.23 × 7.8 =
a) 9.594
b) 95.94
c) 959.4
d) 9594

Brianne takes 4.75 minutes to bike around the block. How long does it take Brianne to bike 11 times around the block?
a) 63.26 minutes
b) 52.25 minutes
c) 63.26 minutes
d) 53.25 minutes

Find the product. 3.68 × 19.7 =
a) 57.49
b) 72.496
c) 7,249.6
d) 724.96

Find the product. 3.65 × 154 =
a) 462.24
b) 5,621.0
c) 562.1
d) 56.21

Shay earns $9.00 an hour. How much will she earn for working 6.5 hours?
a) $58.00
b) $58.50
c) $585.50
d) $54.50

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