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Estimating and Rounding

Total questions: 36

Worksheet time: 2hrs 22mins

Name
Class
Date
1.

What is 56 rounded to the nearest ten?

a)

40

b)

70

c)

50

d)

60

2.

Estimate and add:


66

+ 22

a)

80

b)

88

c)

90

d)

100

3.

Bella jumped rope 66 times. About how many times did she jump?

a)

60

b)

70

c)

75

d)

80

4.

Jamal ate 42 skittles and Jake ate 34 skittles. About how many did they eat in all?

a)

60

b)

48

c)

70

d)

80

5.

Mrs. Whittle's class has 38 oranges and Mrs. Craig's class has 17 oranges. About how many oranges do they have in all?

a)

60

b)

75

c)

55

d)

70

6.

Round this number to the nearest thousand: 578,765

a)

578,765

b)

578,000

c)

8,000

d)

579,000

7.

Estimate this sum: 56+43

a)

99

b)

100

c)

90

d)

110

8.

What happens if it does not tell you which number to round to?

a)

Round to the smallest place value

b)

Round to the largest place value

c)

Pick a place value number and just round it

d)

I have no idea what to do! Help!

9.

If I have 58 gummy bears, and then I eat 20 --- ABOUT how many gummy bears do I have left?

a)

38 gummy bears

b)

40 gummy bears

c)

I don't know because I am sure you ate more than 20.

d)

80 gummy bears

10.
Round 26.3 to the nearest whole number
a)
25
b)
26
11.
Eastfield college has 1,537 students. Richland college has 2,785. Rounding to the HUNDREDS place, approximately how many fewer students does Eastfield college have than Richland college.
a)
1,300
b)
1,200
c)
1,100
d)
1,500
12.
If you have 819, you might say you have approximately...
a)
900
b)
880
c)
820
d)
810
13.
Mr. Smith drove 1,380 miles in the month of August and 656 miles in the month of September. Approximately how many miles did he drive all together.
a)
2,000.
b)
2,100.
c)
2,036.
d)
2,500.
14.
Mrs. Krutak used 1,820 pencils last year. This year she thinks she will use 1,932 pencils. About how many pencils is that all together?
a)
3,000.
b)
3,700.
c)
4,000.
d)
3,752.
15.
Caleb has 5,233 books. Elizabeth has 2,354 books. Estimate how many fewer books Elizabeth has?
a)
2,900.
b)
3,000.
c)
2,879.
d)
2,870.
16.
If you were estimating 8,964 + 825, what would be the best place value to round to?
a)
Thousands
b)
Hundreds
c)
Tens
d)
Don't round at all.
17.
If you were deciding about how much 1,235 - 58 equaled to, which place value would you round to?
a)
Tens
b)
Hundreds
c)
Thousands
d)
Tenths
18.
Approximately how many students went on the field trip to Washington, DC?
DC VISITORS
7th Graders      4,945.
8th Graders      5,623.
9th Graders      1,989.
a)
12,557.
b)
13,000.
c)
12,600.
d)
12,400.
19.
Use compatible numbers to estimate the value of 76 + 26.
a)
75 + 25 = 100.
b)
80 + 30 = 110
c)
76 + 26 = 102
d)
70 + 20 = 90
20.
Which numbers represent a good example of using compatible numbers instead of just rounding?
a)
14 + 11 (use 10+10)
b)
24 + 14 (use 20 + 10)
c)
4 + 14 (use 5 + 15)
d)
34 + 13 (use 30+10)
21.
Round each decimal to the nearest one.  Then subtract.
42.01 - 5.92 =
a)
37
b)
36
c)
33
d)
48
22.
Round 5.592 to the nearest hundredth.
a)
5.60
b)
5.50
c)
6.59
d)
5.59
23.
Round 47.941 to the nearest tenth.
a)
47.9
b)
48
c)
47.91
d)
48.1
24.
Round the decimal to the nearest hundredth.
8.067
a)
8.06
b)
8.00
c)
8
d)
8.07
25.
Round the decimal to the nearest tenth.
26.138
a)
26.138
b)
26
c)
26.1
d)
27.03
26.
Round the decimal to the nearest one.
17.93
a)
17
b)
17.9
c)
17.94
d)
18
27.
Which is the best estimate?
4.97 + 13.02
a)
14
b)
16
c)
18
d)
19
28.
Miss Egan's lunch bill was $5.74.  She paid with a $10.00 bill.  About how much change does she receive?
a)
$4
b)
$5
c)
$15
d)
$16
29.

Keegan had $11 after he left the candy store. If he bought candy for $6.39, ABOUT how much money did he have before he went into the store?

a)

$17

b)

$14.9

c)

$8.23

d)

$4.13

30.
Estimate the Difference:
14.87 - 2.341=
a)
11
b)
12
c)
13
31.
Estimate the sum:
22.356 + 49.90=
a)
72
b)
71
c)
73
32.
Estimate the sum of 37+99 by rounding to the nearest tens
a)
120
b)
150
c)
140
d)
136
33.
Estimate the sum of 120+190 by rounding to the nearest hundreds
a)
100
b)
200
c)
0
d)
300
34.
Tracy ordered 325 pet toys and 165 bags of dog food for her new pet store. Which is the best estimate of the total number of items Tracy ordered?
a)
400
b)
500
c)
600
d)
700
35.
There was 926 people at basketball tournament. 607 people left before noon. Which is the best estimate of the number of people who stayed?
a)
150
b)
250
c)
300
d)
500
36.

My Tim's order came to $2.57. If I paid with a $10 bill, what do you estimate I would get back?

a)

$7 and change

b)

$8 and change

c)

$7

d)

$3 and change

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