WorksheetsTopic 1 - Rounding Off
Total questions: 60
Worksheet time: 1hrs 3mins
Name
Class
Date
1.
237 fifth graders and 346 fourth graders went on a field trip. Estimate how many more fourth graders were on a field trip than fifth graders.
a)
200 more
b)
109 more
c)
100 more
d)
110 more
2.
If you have 382, you might say you have ABOUT...
a)
400
b)
390
c)
450
d)
350
3.
Round the number to the nearest tens.
576
576
a)
580
b)
570
c)
550
4.
Round off the number to the nearest hundred
457
457
a)
400
b)
500
c)
600
d)
450
5.
Round off the number to the nearest thousands
5674
5674
a)
6,000
b)
5,000
c)
5,500
d)
6,500
6.
If the number 1,356 is rounded to the nearest hundred, which is the correct answer?
a)
1300
b)
1400
c)
1200
d)
1450
7.
Celia bought five kilos of rice in the market worth ¥1,355. Round off the amount to the nearest thousand.
a)
1,500
b)
2,500
c)
2,000
d)
1,000
8.
Round off 250 to the nearest hundred.
a)
400
b)
200
c)
300
d)
100
9.
Round off 34,876 to the nearest ten thousand.
a)
30,000
b)
40,000
c)
35,000
d)
25,000
10.
Round off 8.4016 to two decimal places.
a)
8.4
b)
8.40
c)
8.41
11.
Round off 17.92653 to 3 decimal places.
a)
17.9
b)
17.926
c)
17.927
12.
State the number of significant figures in 73502.
a)
3
b)
4
c)
5
13.
State the number of significant figures in 5.038.
a)
1
b)
3
c)
4
14.
Round off 28.132 95 to nearest whole number.
a)
29
b)
28
c)
28.1
d)
30
15.
Round off 208.56 to 2 significant figures
a)
200
b)
210
c)
208
d)
210.00
16.
Round off 29.393 to 3 significant figures
a)
29.4
b)
29.3
c)
29.40
d)
30
17.
Round off 235.49 to 1 decimal place
a)
240
b)
235
c)
235.5
d)
235.50
18.
Round off 4.983 to 2 decimal place
a)
4.98
b)
5.00
c)
5
d)
4.90
19.
Round off 576 to the nearest ten
a)
A. 580
b)
B. 500
c)
C. 600
d)
D. 680
20.
Round of 440 to the nearest ten
a)
A. 30
b)
B. 40
c)
C. 400
d)
D. 440
21.
Round off 556 to the nearest ten
a)
A. 660
b)
B. 560
c)
C. 780
d)
D. 500
22.
How many sig figs are there?
100.00
100.00
a)
1
b)
3
c)
4
d)
5
23.
How many sig figs are there?
4004
4004
a)
1
b)
2
c)
3
d)
4
24.
How many sig figs are there?
0.000008
0.000008
a)
1
b)
2
c)
6
d)
7
25.
How many sig figs are there?
0.00400
0.00400
a)
1
b)
3
c)
5
d)
6
26.
How many sig figs are there?
9009.00
9009.00
a)
2
b)
4
c)
5
d)
6
27.
How many sig figs are there?
4000.
4000.
a)
1
b)
3
c)
4
28.
How many sig figs are there?
27000000
27000000
a)
2
b)
5
c)
8
29.
How many sig figs are there?
5.00000008
5.00000008
a)
2
b)
6
c)
9
30.
How many significant figures does the following number have: 0.065102
a)
1
b)
2
c)
4
d)
5
31.
How many significant figures does the following number have: 0.0079010
a)
1
b)
4
c)
5
d)
9
32.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
33.
Round 1009 to three sig figs
a)
100
b)
101
c)
1010
d)
1000
34.
What place value is the 2 in, in the number 624
a)
Ones
b)
Tens
c)
Hundreds
d)
Thousands
35.
Estimate. Round each number to the given place value.
48,205+50,214; thousands
48,205+50,214; thousands
a)
99,000
b)
97,000
c)
98,000
d)
98,419
36.
Estimate. Round each number to the given place value.
7,172-5,103; hundreds
7,172-5,103; hundreds
a)
2,100
b)
2,200
c)
2,069
d)
2,300
37.
Round to the nearest ten, then estimate:
267 + 517
267 + 517
a)
790
b)
780
c)
795
d)
775
38.
What is the answer to a subtraction problem called?
a)
difference
b)
quotient
c)
sum
d)
product
39.
What is the answer to an addition problem called?
a)
difference
b)
quotient
c)
sum
d)
product
40.
Which is the closest estimate of
78 x 31?
78 x 31?
a)
70 x 30
b)
70 x 40
c)
80 x 30
d)
80 x 40
41.
Round 4,345 to the nearest thousand.
a)
4,000
b)
5,000
c)
4,400
d)
4,350
42.
Round 38,776 to the nearest thousand.
a)
38,800
b)
38,700
c)
39,000
d)
38,000
43.
Solve this problem by rounding each number to the nearest hundred:
675 + 831=
675 + 831=
a)
1,400
b)
1,506
c)
1,500
d)
1,450
44.
Solve this problem by rounding each number to the nearest thousand:
1,456 + 6,825 =
1,456 + 6,825 =
a)
8,281
b)
8,000
c)
7,000
d)
7,500
45.
What is the answer to a multiplication problem called?
a)
difference
b)
quotient
c)
sum
d)
product
46.
What is the answer to a division problem called?
a)
difference
b)
quotient
c)
sum
d)
product
47.
What is 8.657 to 2 DECIMAL PLACES?
a)
8.7
b)
8.6
c)
8.66
d)
8
48.
What is 9.5193 to 2 DECIMAL PLACES?
a)
9.5
b)
9.52
c)
9.520
d)
9
49.
What is 7.0097 to 3 SIGNIFICANT FIGURES?
a)
7.001
b)
7.01
c)
7.010
d)
7.10
50.
Round 143 to the nearest ten
a)
100
b)
130
c)
140
d)
150
51.
Which of the following numbers will NOT round to 400 when rounding to the nearest hundred?
a)
409
b)
445
c)
345
d)
398
52.
Estimate 24+67=
a)
910
b)
80
c)
95
d)
90
53.
ESTIMATE the sum for : 89,473+64,987
a)
100,000
b)
150,000
c)
154,460
d)
20,000
54.
Amy had 13 jelly beans in her left hand and 28 in her right hand. Estimate how many jelly beans Amy had in all.
a)
45
b)
40
c)
50
d)
30
55.
Round to the nearest ten, then estimate:
27 + 78
27 + 78
a)
115
b)
90
c)
100
d)
110
56.
Round to the nearest ten, then estimate:
267 + 517
267 + 517
a)
790
b)
780
c)
795
d)
775
57.
Round 789 to the nearest hundred
a)
800
b)
700
c)
780
d)
790
58.
Round 151 to the nearest ten
a)
100
b)
50
c)
150
d)
60
59.
What is the value of the red digit?
536
536
a)
500
b)
30
c)
6
d)
300
60.
What is the value of of the digit in red:
6792
6792
a)
9
b)
90
c)
900
d)
9000
100 %
