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Topic 3: Operations With Decimals Review
Test Description: Operations with Decimals Review
Instructions: Answer all questions to get your test result.
1) 92.2 – ____ is about 64. Which decimal, rounded to the nearest whole number, makes the equation true?
A
28.9
B
27.6
C
30.7
D
29.5
2) Estimate the sum of 2.31 + 5.67 by rounding each addend to the nearest tenth.
A
8.0
B
7.9
C
8.11
D
7.98
3) Estimate the sum of 4.32 + 9.49 by rounding each addend to the nearest whole number.
A
15
B
13
C
12
D
14
4) 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
$12
B
$11
C
$10
D
$13
5) 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
2.9 miles
B
2.8 miles
C
3.0 miles
D
3.1 miles
6) 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
0.112
C
0.114
D
0.014
7) Find the sum. 6.7 + 3.78 =
A
10.15
B
9.98
C
9.48
D
10.48
8) 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
0.39 L
B
0.41 L
C
0.11 L
D
0.0 L
9) Find the difference. 6.54 – 3.88 =
A
2.77
B
2.66
C
2.67
D
2.76
10) 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
0.0295
B
0.0145
C
0.0744
D
0.0044
11) Which is the best estimate for 49.59 x 6.33?
A
420
B
275
C
355
D
300
12) Which is the best estimate for $65.08 divided by $4.97?
A
11
B
13
C
12
D
14
13) Estimate 54.08 divided by 6.12 using compatible numbers.
A
6
B
8
C
9
D
7
14) Student admission to the zoo is $15.55 per person. What is the best estimate of the cost of admission for 9 students?
A
$180
B
$135
C
$144
D
$172
15) 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
23
B
22
C
21
D
24
16) Place the decimal point in the product. 1.23 × 7.8 =
A
9.594
B
9594
C
959.4
D
95.94
17) Brianne takes 4.75 minutes to bike around the block. How long does it take Brianne to bike 11 times around the block?
A
52.25 minutes
B
63.26 minutes
C
53.25 minutes
D
63.26 minutes
18) Find the product. 3.68 × 19.7 =
A
72.496
B
724.96
C
7,249.6
D
57.49
19) Find the product. 3.65 × 154 =
A
462.24
B
562.1
C
5,621.0
D
56.21
20) Shay earns $9.00 an hour. How much will she earn for working 6.5 hours?
A
$58.00
B
$58.50
C
$54.50
D
$585.50
*select an answer for all questions
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