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WorksheetsMath G7 Chapter 3 Mastering Significant Figures and Estimation
Total questions: 20
Worksheet time: 10mins
How many significant figures are in the number 0.00456?
2
4
5
3
Round the number 123.456 to three significant figures.
123
120
123.5
124
Estimate the sum of 48.7 and 3.2 using rounding.
52
60
50
55
What is the approximate value of 19.99 when rounded to the nearest whole number?
20
21
19
18
Calculate 5.67 + 3.1 and express the answer with the correct significant figures.
8.8
8.0
7.5
9.7
Identify the number of significant figures in 1002.
3
5
2
4
Round 0.00789 to two significant figures.
0.007
0.0078
0.0079
0.008
Estimate the product of 6.4 and 2.1.
10
12
14
8.5
What is the approximate value of 1500 when rounded to two significant figures?
1600
1501
1500
1400
How many significant figures are in the number 0.02030?
4
2
3
5
Round the number 4567.89 to four significant figures.
4567
4570
4600
4568
Estimate the difference between 100 and 37.5.
60
50
75
80
Calculate 2.5 x 3.00 and express the answer with the correct significant figures.
6.0
7.0
7.5
8.0
Identify the number of significant figures in 0.00340.
2
4
5
3
Round 78.456 to the nearest whole number.
77
79
78.5
78
Estimate the quotient of 50 and 3.
15
20
17
12
What is the approximate value of 0.0045 when rounded to one significant figure?
0.005
0.004
0.0005
0.01
How many significant figures are in the number 5000 when no decimal is present?
3
1
2
4
Round 9.876 to three significant figures.
9.88
9.90
10.00
9.87
Estimate the sum of 12.3, 4.56, and 0.78.
20
16
15.5
18
