Workbook Detail
Number Sense Estimation Estimate Differences — Set 1
Estimate: 104 − 27 ≈ ?
Show answer
Answer: 70
- Expression
- 104 − 27
- EstimatedAnswer
- 70
- ExactAnswer
- 77
Estimate: 46 − 19 ≈ ?
Show answer
Answer: 30
- Expression
- 46 − 19
- EstimatedAnswer
- 30
- ExactAnswer
- 27
Estimate: 40 − 19 ≈ ?
Show answer
Answer: 20
- Expression
- 40 − 19
- EstimatedAnswer
- 20
- ExactAnswer
- 21
Estimate: 54 − 53 ≈ ?
- Expression
- 54 − 53
- EstimatedAnswer
- 0
- ExactAnswer
- 1
Estimate: 78 − 31 ≈ ?
Show answer
Answer: 50
- Expression
- 78 − 31
- EstimatedAnswer
- 50
- ExactAnswer
- 47
Estimate: 75 − 70 ≈ ?
Show answer
Answer: 10
- Expression
- 75 − 70
- EstimatedAnswer
- 10
- ExactAnswer
- 5
Estimate: 82 − 51 ≈ ?
Show answer
Answer: 30
- Expression
- 82 − 51
- EstimatedAnswer
- 30
- ExactAnswer
- 31
Estimate: 59 − 24 ≈ ?
Show answer
Answer: 40
- Expression
- 59 − 24
- EstimatedAnswer
- 40
- ExactAnswer
- 35
Estimate: 56 − 42 ≈ ?
Show answer
Answer: 20
- Expression
- 56 − 42
- EstimatedAnswer
- 20
- ExactAnswer
- 14
Estimate: 38 − 37 ≈ ?
- Expression
- 38 − 37
- EstimatedAnswer
- 0
- ExactAnswer
- 1
Estimate: 107 − 65 ≈ ?
Show answer
Answer: 40
- Expression
- 107 − 65
- EstimatedAnswer
- 40
- ExactAnswer
- 42
Estimate: 62 − 19 ≈ ?
Show answer
Answer: 40
- Expression
- 62 − 19
- EstimatedAnswer
- 40
- ExactAnswer
- 43
Estimate: 101 − 48 ≈ ?
Show answer
Answer: 50
- Expression
- 101 − 48
- EstimatedAnswer
- 50
- ExactAnswer
- 53
Estimate: 60 − 43 ≈ ?
Show answer
Answer: 20
- Expression
- 60 − 43
- EstimatedAnswer
- 20
- ExactAnswer
- 17
Estimate: 62 − 37 ≈ ?
Show answer
Answer: 20
- Expression
- 62 − 37
- EstimatedAnswer
- 20
- ExactAnswer
- 25
Estimate: 28 − 15 ≈ ?
Show answer
Answer: 10
- Expression
- 28 − 15
- EstimatedAnswer
- 10
- ExactAnswer
- 13
Estimate: 104 − 77 ≈ ?
Show answer
Answer: 20
- Expression
- 104 − 77
- EstimatedAnswer
- 20
- ExactAnswer
- 27
Estimate: 29 − 28 ≈ ?
- Expression
- 29 − 28
- EstimatedAnswer
- 0
- ExactAnswer
- 1
Estimate: 86 − 41 ≈ ?
Show answer
Answer: 50
- Expression
- 86 − 41
- EstimatedAnswer
- 50
- ExactAnswer
- 45
Estimate: 65 − 53 ≈ ?
Show answer
Answer: 20
- Expression
- 65 − 53
- EstimatedAnswer
- 20
- ExactAnswer
- 12