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

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**Place the decimal point in the product. 1.23 × 7.8 =**

a) 9.594

b) 95.94

c) 959.4

d) 9594

**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

**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

**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

**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

**Find the difference. 6.54 – 3.88 =**

a) 2.77

b) 2.76

c) 2.67

d) 2.66

**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 sum. 6.7 + 3.78 =**

a) 9.98

b) 9.48

c) 10.48

d) 10.15

**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

**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

**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

**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

**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

**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

**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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