Workbook Detail
Number Sense Estimation Estimate Differences — Set 9
Estimate: 86 − 71 ≈ ?
Show answer
Answer: 20
- Expression
- 86 − 71
- EstimatedAnswer
- 20
- ExactAnswer
- 15
Estimate: 50 − 41 ≈ ?
Show answer
Answer: 10
- Expression
- 50 − 41
- EstimatedAnswer
- 10
- ExactAnswer
- 9
Estimate: 57 − 48 ≈ ?
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Answer: 10
- Expression
- 57 − 48
- EstimatedAnswer
- 10
- ExactAnswer
- 9
Estimate: 52 − 11 ≈ ?
Show answer
Answer: 40
- Expression
- 52 − 11
- EstimatedAnswer
- 40
- ExactAnswer
- 41
Estimate: 83 − 43 ≈ ?
Show answer
Answer: 40
- Expression
- 83 − 43
- EstimatedAnswer
- 40
- ExactAnswer
- 40
Estimate: 20 − 10 ≈ ?
Show answer
Answer: 10
- Expression
- 20 − 10
- EstimatedAnswer
- 10
- ExactAnswer
- 10
Estimate: 58 − 40 ≈ ?
Show answer
Answer: 20
- Expression
- 58 − 40
- EstimatedAnswer
- 20
- ExactAnswer
- 18
Estimate: 63 − 39 ≈ ?
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Answer: 20
- Expression
- 63 − 39
- EstimatedAnswer
- 20
- ExactAnswer
- 24
Estimate: 57 − 53 ≈ ?
Show answer
Answer: 10
- Expression
- 57 − 53
- EstimatedAnswer
- 10
- ExactAnswer
- 4
Estimate: 94 − 89 ≈ ?
- Expression
- 94 − 89
- EstimatedAnswer
- 0
- ExactAnswer
- 5
Estimate: 39 − 16 ≈ ?
Show answer
Answer: 20
- Expression
- 39 − 16
- EstimatedAnswer
- 20
- ExactAnswer
- 23
Estimate: 41 − 21 ≈ ?
Show answer
Answer: 20
- Expression
- 41 − 21
- EstimatedAnswer
- 20
- ExactAnswer
- 20
Estimate: 48 − 17 ≈ ?
Show answer
Answer: 30
- Expression
- 48 − 17
- EstimatedAnswer
- 30
- ExactAnswer
- 31
Estimate: 107 − 74 ≈ ?
Show answer
Answer: 40
- Expression
- 107 − 74
- EstimatedAnswer
- 40
- ExactAnswer
- 33
Estimate: 77 − 19 ≈ ?
Show answer
Answer: 60
- Expression
- 77 − 19
- EstimatedAnswer
- 60
- ExactAnswer
- 58
Estimate: 55 − 19 ≈ ?
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Answer: 40
- Expression
- 55 − 19
- EstimatedAnswer
- 40
- ExactAnswer
- 36
Estimate: 85 − 23 ≈ ?
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Answer: 70
- Expression
- 85 − 23
- EstimatedAnswer
- 70
- ExactAnswer
- 62
Estimate: 108 − 90 ≈ ?
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Answer: 20
- Expression
- 108 − 90
- EstimatedAnswer
- 20
- ExactAnswer
- 18
Estimate: 98 − 59 ≈ ?
Show answer
Answer: 40
- Expression
- 98 − 59
- EstimatedAnswer
- 40
- ExactAnswer
- 39
Estimate: 93 − 38 ≈ ?
Show answer
Answer: 50
- Expression
- 93 − 38
- EstimatedAnswer
- 50
- ExactAnswer
- 55