Workbook Detail
Number Sense Estimation Estimate Differences — Set 7
Estimate: 107 − 88 ≈ ?
Show answer
Answer: 20
- Expression
- 107 − 88
- EstimatedAnswer
- 20
- ExactAnswer
- 19
Estimate: 101 − 21 ≈ ?
Show answer
Answer: 80
- Expression
- 101 − 21
- EstimatedAnswer
- 80
- ExactAnswer
- 80
Estimate: 20 − 18 ≈ ?
- Expression
- 20 − 18
- EstimatedAnswer
- 0
- ExactAnswer
- 2
Estimate: 25 − 21 ≈ ?
Show answer
Answer: 10
- Expression
- 25 − 21
- EstimatedAnswer
- 10
- ExactAnswer
- 4
Estimate: 82 − 47 ≈ ?
Show answer
Answer: 30
- Expression
- 82 − 47
- EstimatedAnswer
- 30
- ExactAnswer
- 35
Estimate: 49 − 41 ≈ ?
Show answer
Answer: 10
- Expression
- 49 − 41
- EstimatedAnswer
- 10
- ExactAnswer
- 8
Estimate: 42 − 36 ≈ ?
- Expression
- 42 − 36
- EstimatedAnswer
- 0
- ExactAnswer
- 6
Estimate: 29 − 18 ≈ ?
Show answer
Answer: 10
- Expression
- 29 − 18
- EstimatedAnswer
- 10
- ExactAnswer
- 11
Estimate: 62 − 53 ≈ ?
Show answer
Answer: 10
- Expression
- 62 − 53
- EstimatedAnswer
- 10
- ExactAnswer
- 9
Estimate: 58 − 39 ≈ ?
Show answer
Answer: 20
- Expression
- 58 − 39
- EstimatedAnswer
- 20
- ExactAnswer
- 19
Estimate: 58 − 40 ≈ ?
Show answer
Answer: 20
- Expression
- 58 − 40
- EstimatedAnswer
- 20
- ExactAnswer
- 18
Estimate: 98 − 18 ≈ ?
Show answer
Answer: 80
- Expression
- 98 − 18
- EstimatedAnswer
- 80
- ExactAnswer
- 80
Estimate: 92 − 78 ≈ ?
Show answer
Answer: 10
- Expression
- 92 − 78
- EstimatedAnswer
- 10
- ExactAnswer
- 14
Estimate: 29 − 26 ≈ ?
- Expression
- 29 − 26
- EstimatedAnswer
- 0
- ExactAnswer
- 3
Estimate: 63 − 19 ≈ ?
Show answer
Answer: 40
- Expression
- 63 − 19
- EstimatedAnswer
- 40
- ExactAnswer
- 44
Estimate: 59 − 24 ≈ ?
Show answer
Answer: 40
- Expression
- 59 − 24
- EstimatedAnswer
- 40
- ExactAnswer
- 35
Estimate: 102 − 69 ≈ ?
Show answer
Answer: 30
- Expression
- 102 − 69
- EstimatedAnswer
- 30
- ExactAnswer
- 33
Estimate: 79 − 73 ≈ ?
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Answer: 10
- Expression
- 79 − 73
- EstimatedAnswer
- 10
- ExactAnswer
- 6
Estimate: 21 − 12 ≈ ?
Show answer
Answer: 10
- Expression
- 21 − 12
- EstimatedAnswer
- 10
- ExactAnswer
- 9
Estimate: 55 − 33 ≈ ?
Show answer
Answer: 30
- Expression
- 55 − 33
- EstimatedAnswer
- 30
- ExactAnswer
- 22