Workbook Detail
Number Sense Estimation Estimate Differences — Set 5
Estimate: 79 − 29 ≈ ?
Show answer
Answer: 50
- Expression
- 79 − 29
- EstimatedAnswer
- 50
- ExactAnswer
- 50
Estimate: 80 − 57 ≈ ?
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Answer: 20
- Expression
- 80 − 57
- EstimatedAnswer
- 20
- ExactAnswer
- 23
Estimate: 27 − 20 ≈ ?
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Answer: 10
- Expression
- 27 − 20
- EstimatedAnswer
- 10
- ExactAnswer
- 7
Estimate: 95 − 53 ≈ ?
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Answer: 50
- Expression
- 95 − 53
- EstimatedAnswer
- 50
- ExactAnswer
- 42
Estimate: 73 − 68 ≈ ?
- Expression
- 73 − 68
- EstimatedAnswer
- 0
- ExactAnswer
- 5
Estimate: 36 − 20 ≈ ?
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Answer: 20
- Expression
- 36 − 20
- EstimatedAnswer
- 20
- ExactAnswer
- 16
Estimate: 49 − 27 ≈ ?
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Answer: 20
- Expression
- 49 − 27
- EstimatedAnswer
- 20
- ExactAnswer
- 22
Estimate: 37 − 12 ≈ ?
Show answer
Answer: 30
- Expression
- 37 − 12
- EstimatedAnswer
- 30
- ExactAnswer
- 25
Estimate: 55 − 31 ≈ ?
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Answer: 30
- Expression
- 55 − 31
- EstimatedAnswer
- 30
- ExactAnswer
- 24
Estimate: 67 − 65 ≈ ?
- Expression
- 67 − 65
- EstimatedAnswer
- 0
- ExactAnswer
- 2
Estimate: 82 − 12 ≈ ?
Show answer
Answer: 70
- Expression
- 82 − 12
- EstimatedAnswer
- 70
- ExactAnswer
- 70
Estimate: 88 − 77 ≈ ?
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Answer: 10
- Expression
- 88 − 77
- EstimatedAnswer
- 10
- ExactAnswer
- 11
Estimate: 99 − 78 ≈ ?
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Answer: 20
- Expression
- 99 − 78
- EstimatedAnswer
- 20
- ExactAnswer
- 21
Estimate: 90 − 84 ≈ ?
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Answer: 10
- Expression
- 90 − 84
- EstimatedAnswer
- 10
- ExactAnswer
- 6
Estimate: 27 − 19 ≈ ?
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Answer: 10
- Expression
- 27 − 19
- EstimatedAnswer
- 10
- ExactAnswer
- 8
Estimate: 86 − 46 ≈ ?
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Answer: 40
- Expression
- 86 − 46
- EstimatedAnswer
- 40
- ExactAnswer
- 40
Estimate: 24 − 18 ≈ ?
- Expression
- 24 − 18
- EstimatedAnswer
- 0
- ExactAnswer
- 6
Estimate: 25 − 20 ≈ ?
Show answer
Answer: 10
- Expression
- 25 − 20
- EstimatedAnswer
- 10
- ExactAnswer
- 5
Estimate: 24 − 16 ≈ ?
- Expression
- 24 − 16
- EstimatedAnswer
- 0
- ExactAnswer
- 8
Estimate: 107 − 38 ≈ ?
Show answer
Answer: 70
- Expression
- 107 − 38
- EstimatedAnswer
- 70
- ExactAnswer
- 69