Workbook Detail
Number Sense Estimation Estimate Differences — Set 2
Estimate: 81 − 58 ≈ ?
Show answer
Answer: 20
- Expression
- 81 − 58
- EstimatedAnswer
- 20
- ExactAnswer
- 23
Estimate: 43 − 15 ≈ ?
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Answer: 20
- Expression
- 43 − 15
- EstimatedAnswer
- 20
- ExactAnswer
- 28
Estimate: 103 − 18 ≈ ?
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Answer: 80
- Expression
- 103 − 18
- EstimatedAnswer
- 80
- ExactAnswer
- 85
Estimate: 55 − 30 ≈ ?
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Answer: 30
- Expression
- 55 − 30
- EstimatedAnswer
- 30
- ExactAnswer
- 25
Estimate: 53 − 33 ≈ ?
Show answer
Answer: 20
- Expression
- 53 − 33
- EstimatedAnswer
- 20
- ExactAnswer
- 20
Estimate: 54 − 45 ≈ ?
- Expression
- 54 − 45
- EstimatedAnswer
- 0
- ExactAnswer
- 9
Estimate: 28 − 14 ≈ ?
Show answer
Answer: 20
- Expression
- 28 − 14
- EstimatedAnswer
- 20
- ExactAnswer
- 14
Estimate: 96 − 88 ≈ ?
Show answer
Answer: 10
- Expression
- 96 − 88
- EstimatedAnswer
- 10
- ExactAnswer
- 8
Estimate: 106 − 25 ≈ ?
Show answer
Answer: 80
- Expression
- 106 − 25
- EstimatedAnswer
- 80
- ExactAnswer
- 81
Estimate: 62 − 38 ≈ ?
Show answer
Answer: 20
- Expression
- 62 − 38
- EstimatedAnswer
- 20
- ExactAnswer
- 24
Estimate: 90 − 63 ≈ ?
Show answer
Answer: 30
- Expression
- 90 − 63
- EstimatedAnswer
- 30
- ExactAnswer
- 27
Estimate: 65 − 43 ≈ ?
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Answer: 30
- Expression
- 65 − 43
- EstimatedAnswer
- 30
- ExactAnswer
- 22
Estimate: 94 − 47 ≈ ?
Show answer
Answer: 40
- Expression
- 94 − 47
- EstimatedAnswer
- 40
- ExactAnswer
- 47
Estimate: 54 − 26 ≈ ?
Show answer
Answer: 20
- Expression
- 54 − 26
- EstimatedAnswer
- 20
- ExactAnswer
- 28
Estimate: 55 − 18 ≈ ?
Show answer
Answer: 40
- Expression
- 55 − 18
- EstimatedAnswer
- 40
- ExactAnswer
- 37
Estimate: 83 − 26 ≈ ?
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Answer: 50
- Expression
- 83 − 26
- EstimatedAnswer
- 50
- ExactAnswer
- 57
Estimate: 91 − 65 ≈ ?
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Answer: 20
- Expression
- 91 − 65
- EstimatedAnswer
- 20
- ExactAnswer
- 26
Estimate: 98 − 33 ≈ ?
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Answer: 70
- Expression
- 98 − 33
- EstimatedAnswer
- 70
- ExactAnswer
- 65
Estimate: 48 − 30 ≈ ?
Show answer
Answer: 20
- Expression
- 48 − 30
- EstimatedAnswer
- 20
- ExactAnswer
- 18
Estimate: 105 − 49 ≈ ?
Show answer
Answer: 60
- Expression
- 105 − 49
- EstimatedAnswer
- 60
- ExactAnswer
- 56