Workbook Detail
Number Sense Estimation Estimate Differences — Set 3
Estimate: 27 − 17 ≈ ?
Show answer
Answer: 10
- Expression
- 27 − 17
- EstimatedAnswer
- 10
- ExactAnswer
- 10
Estimate: 103 − 50 ≈ ?
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Answer: 50
- Expression
- 103 − 50
- EstimatedAnswer
- 50
- ExactAnswer
- 53
Estimate: 48 − 32 ≈ ?
Show answer
Answer: 20
- Expression
- 48 − 32
- EstimatedAnswer
- 20
- ExactAnswer
- 16
Estimate: 45 − 35 ≈ ?
Show answer
Answer: 10
- Expression
- 45 − 35
- EstimatedAnswer
- 10
- ExactAnswer
- 10
Estimate: 30 − 12 ≈ ?
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Answer: 20
- Expression
- 30 − 12
- EstimatedAnswer
- 20
- ExactAnswer
- 18
Estimate: 99 − 91 ≈ ?
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Answer: 10
- Expression
- 99 − 91
- EstimatedAnswer
- 10
- ExactAnswer
- 8
Estimate: 81 − 36 ≈ ?
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Answer: 40
- Expression
- 81 − 36
- EstimatedAnswer
- 40
- ExactAnswer
- 45
Estimate: 109 − 91 ≈ ?
Show answer
Answer: 20
- Expression
- 109 − 91
- EstimatedAnswer
- 20
- ExactAnswer
- 18
Estimate: 28 − 17 ≈ ?
Show answer
Answer: 10
- Expression
- 28 − 17
- EstimatedAnswer
- 10
- ExactAnswer
- 11
Estimate: 106 − 80 ≈ ?
Show answer
Answer: 30
- Expression
- 106 − 80
- EstimatedAnswer
- 30
- ExactAnswer
- 26
Estimate: 74 − 28 ≈ ?
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Answer: 40
- Expression
- 74 − 28
- EstimatedAnswer
- 40
- ExactAnswer
- 46
Estimate: 79 − 69 ≈ ?
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Answer: 10
- Expression
- 79 − 69
- EstimatedAnswer
- 10
- ExactAnswer
- 10
Estimate: 33 − 10 ≈ ?
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Answer: 20
- Expression
- 33 − 10
- EstimatedAnswer
- 20
- ExactAnswer
- 23
Estimate: 40 − 10 ≈ ?
Show answer
Answer: 30
- Expression
- 40 − 10
- EstimatedAnswer
- 30
- ExactAnswer
- 30
Estimate: 23 − 11 ≈ ?
Show answer
Answer: 10
- Expression
- 23 − 11
- EstimatedAnswer
- 10
- ExactAnswer
- 12
Estimate: 36 − 32 ≈ ?
Show answer
Answer: 10
- Expression
- 36 − 32
- EstimatedAnswer
- 10
- ExactAnswer
- 4
Estimate: 71 − 57 ≈ ?
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Answer: 10
- Expression
- 71 − 57
- EstimatedAnswer
- 10
- ExactAnswer
- 14
Estimate: 61 − 50 ≈ ?
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Answer: 10
- Expression
- 61 − 50
- EstimatedAnswer
- 10
- ExactAnswer
- 11
Estimate: 74 − 59 ≈ ?
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Answer: 10
- Expression
- 74 − 59
- EstimatedAnswer
- 10
- ExactAnswer
- 15
Estimate: 42 − 17 ≈ ?
Show answer
Answer: 20
- Expression
- 42 − 17
- EstimatedAnswer
- 20
- ExactAnswer
- 25