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WorksheetsEstimation and Approximation
Total questions: 21
Worksheet time: 12mins
Which of the following numbers does NOT round to 400 when rounding to the nearest 100?
467
371
448
385
48 003 when rounded off to the nearest hundreds will become
48 030
48 300
48 000
48 100
Round off 45 909 to the nearest thousand.
45 000
46 000
46 900
47 000
Round off 963 112 to the nearest ten thousand.
960 112
960 012
960 002
960 000
How many significant figures are in 107,003 m?
3
4
6
5
What is 98.907 rounded to 1 significant figure?
98.9
90
100
1
What is 0.658 rounded to 1 significant figure?
0
0.66
0.7
0.6
What is 78.5 rounded to one significant figure?
79
8
78
80
Sum up the following numbers 0.032, 4.154, 6.0 and 0.3065 to two decimal places (Neco 2013)
10.00
10.40
10.49
10.50
Express the difference between 1 257 and 30017 to 3 significant figures.
1.22
1.23
0.12
0.13
Express 0.00629946 to 3 significant figures
0.000
0.006210
0.00629
0.00630
Find the value of "?" using approximation :
-(4.99)3 + (29.98)2 - (3.01)4 = ?
550
590
620
650
690
Find the value of "?" using approximation :
14.03 * 27.489 - 8.749 * 16.04 = ?
210
250
295
325
350
What is the result of rounding 4.567 to the nearest whole number?
5
4
4.5
5.5
What is the result of rounding 7.893 to the nearest hundredth?
7.8
7.85
7.89
7.80
What is the result of rounding 3.567 to the nearest tenth?
4.0
3.6
3.7
3.5
Which of the following numbers has the most significant figures: 0.0056, 0.056, 0.00056, 0.000056?
0.0056
0.056
0.000056
0.00056
