easy Set 8 Form Exercise

Estimate: 32 − 31 ≈ ?

Expression
32 − 31
EstimatedAnswer
0
ExactAnswer
1

Estimate: 30 − 16 ≈ ?

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Answer: 10

Expression
30 − 16
EstimatedAnswer
10
ExactAnswer
14

Estimate: 97 − 82 ≈ ?

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Answer: 20

Expression
97 − 82
EstimatedAnswer
20
ExactAnswer
15

Estimate: 75 − 48 ≈ ?

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Answer: 30

Expression
75 − 48
EstimatedAnswer
30
ExactAnswer
27

Estimate: 62 − 51 ≈ ?

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Answer: 10

Expression
62 − 51
EstimatedAnswer
10
ExactAnswer
11

Estimate: 60 − 25 ≈ ?

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Answer: 30

Expression
60 − 25
EstimatedAnswer
30
ExactAnswer
35

Estimate: 35 − 21 ≈ ?

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Answer: 20

Expression
35 − 21
EstimatedAnswer
20
ExactAnswer
14

Estimate: 104 − 50 ≈ ?

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Answer: 50

Expression
104 − 50
EstimatedAnswer
50
ExactAnswer
54

Estimate: 75 − 29 ≈ ?

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Answer: 50

Expression
75 − 29
EstimatedAnswer
50
ExactAnswer
46

Estimate: 21 − 18 ≈ ?

Expression
21 − 18
EstimatedAnswer
0
ExactAnswer
3

Estimate: 88 − 74 ≈ ?

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Answer: 20

Expression
88 − 74
EstimatedAnswer
20
ExactAnswer
14

Estimate: 62 − 10 ≈ ?

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Answer: 50

Expression
62 − 10
EstimatedAnswer
50
ExactAnswer
52

Estimate: 61 − 24 ≈ ?

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Answer: 40

Expression
61 − 24
EstimatedAnswer
40
ExactAnswer
37

Estimate: 33 − 22 ≈ ?

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Answer: 10

Expression
33 − 22
EstimatedAnswer
10
ExactAnswer
11

Estimate: 85 − 80 ≈ ?

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Answer: 10

Expression
85 − 80
EstimatedAnswer
10
ExactAnswer
5

Estimate: 25 − 19 ≈ ?

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Answer: 10

Expression
25 − 19
EstimatedAnswer
10
ExactAnswer
6

Estimate: 63 − 23 ≈ ?

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Answer: 40

Expression
63 − 23
EstimatedAnswer
40
ExactAnswer
40

Estimate: 50 − 45 ≈ ?

Expression
50 − 45
EstimatedAnswer
0
ExactAnswer
5

Estimate: 66 − 10 ≈ ?

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Answer: 60

Expression
66 − 10
EstimatedAnswer
60
ExactAnswer
56

Estimate: 49 − 47 ≈ ?

Expression
49 − 47
EstimatedAnswer
0
ExactAnswer
2