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Estimation And Approximating
Test Description: Unit 3
Instructions: Answer all questions to get your test result.
1) round to a number to a suitable degree of accuracy
A
estimate
B
inverse operation
C
round
D
approximate
2) approximation of a number or amount, based on a calculation with rounded numbers
A
round
B
approximate
C
inverse operation
D
estimate
3) the operation that reverses the effect of another
A
estimate
B
approximate
C
inverse operation
D
round
4) estimate 63 x 28
A
1800
B
1700
C
1764
D
1864
5) estimate 13 + 47
A
60
B
40
C
50
D
55
6) estimate 157 - 96
A
60
B
110
C
100
D
40
7) estimate 1125 ÷ 12
A
200
B
70
C
94
D
100
8) estimate 17.8 x 9.9
A
198
B
153
C
200
D
100
9) estimate 882 ÷ 31
A
30
B
28.45
C
35
D
29.33
10) estimate 44.5 -23.7
A
20.8
B
21
C
20
D
19
11) estimate 239.8 x 47.64
A
15 000
B
10 000
C
11 424
D
11 424.07
*select an answer for all questions
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