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These sample problems below for Estimated Subtraction were generated by the MathScore.com engine.

Sample Problems For Estimated Subtraction

Complexity=60

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
62
- 26
Estimate 		2.  
100
- 55
Estimate

Complexity=100

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
91
- 39
Estimate 		2.  
145
- 47
Estimate

Complexity=200

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
320
- 188
Estimate 		2.  
191
- 92
Estimate

Complexity=700

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
1154
- 483
Estimate 		2.  
807
- 381
Estimate

Complexity=1000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
1403
- 985
Estimate 		2.  
1220
- 453
Estimate

Complexity=5000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
7272
- 3019
Estimate 		2.  
4233
- 2318
Estimate

Complexity=10000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
14583
- 7362
Estimate 		2.  
16668
- 8938
Estimate

Complexity=20000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
27891
- 13208
Estimate 		2.  
30424
- 19471
Estimate

Complexity=100000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
1.  
140415
- 67712
Estimate 		2.  
152384
- 54895
Estimate

Answers

Complexity=60

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
62
- 26
 Estimate
Solution
To get the estimated answer, estimate each operand.
62 => 60
26 => 30
60 - 30 = 30
#ProblemCorrect AnswerYour Answer
2
100
- 55
 Estimate
Solution
To get the estimated answer, estimate each operand.
100 => 100
55 => 60
100 - 60 = 40
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.

Complexity=100

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
91
- 39
 Estimate
Solution
To get the estimated answer, estimate each operand.
91 => 90
39 => 40
90 - 40 = 50
#ProblemCorrect AnswerYour Answer
2
145
- 47
 Estimate
Solution
To get the estimated answer, estimate each operand.
145 => 150
47 => 50
150 - 50 = 100
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.

Complexity=200

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
320
- 188
 Estimate
Solution
To get the estimated answer, estimate each operand.
320 => 300
188 => 200
300 - 200 = 100
#ProblemCorrect AnswerYour Answer
2
191
- 92
 Estimate
Solution
To get the estimated answer, estimate each operand.
191 => 190
92 => 90
190 - 90 = 100
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.

Complexity=700

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
1154
- 483
 Estimate
Solution
To get the estimated answer, estimate each operand.
1154 => 1200
483 => 500
1200 - 500 = 700
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.
#ProblemCorrect AnswerYour Answer
2
807
- 381
 Estimate
Solution
To get the estimated answer, estimate each operand.
807 => 800
381 => 400
800 - 400 = 400

Complexity=1000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
1403
- 985
 Estimate
Solution
To get the estimated answer, estimate each operand.
1403 => 1400
985 => 1000
1400 - 1000 = 400
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.
#ProblemCorrect AnswerYour Answer
2
1220
- 453
 Estimate
Solution
To get the estimated answer, estimate each operand.
1220 => 1200
453 => 500
1200 - 500 = 700
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.

Complexity=5000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
7272
- 3019
 Estimate
Solution
To get the estimated answer, estimate each operand.
7272 => 7000
3019 => 3000
7000 - 3000 = 4000
#ProblemCorrect AnswerYour Answer
2
4233
- 2318
 Estimate
Solution
To get the estimated answer, estimate each operand.
4233 => 4000
2318 => 2000
4000 - 2000 = 2000

Complexity=10000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
14583
- 7362
 Estimate
Solution
To get the estimated answer, estimate each operand.
14583 => 15000
7362 => 7000
15000 - 7000 = 8000
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.
#ProblemCorrect AnswerYour Answer
2
16668
- 8938
 Estimate
Solution
To get the estimated answer, estimate each operand.
16668 => 17000
8938 => 9000
17000 - 9000 = 8000
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.

Complexity=20000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
27891
- 13208
 Estimate
Solution
To get the estimated answer, estimate each operand.
27891 => 30000
13208 => 10000
30000 - 10000 = 20000
#ProblemCorrect AnswerYour Answer
2
30424
- 19471
 Estimate
Solution
To get the estimated answer, estimate each operand.
30424 => 30000
19471 => 20000
30000 - 20000 = 10000

Complexity=100000

Estimate the difference using the highest practical magnitude.
Example 1: 53 - 19 => 50 - 20
Example 2: 123 - 57 => 120 - 60
Example 3: 3898 - 2301 => 4000 - 2000
#ProblemCorrect AnswerYour Answer
1
140415
- 67712
 Estimate
Solution
To get the estimated answer, estimate each operand.
140415 => 140000
67712 => 70000
140000 - 70000 = 70000
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.
#ProblemCorrect AnswerYour Answer
2
152384
- 54895
 Estimate
Solution
To get the estimated answer, estimate each operand.
152384 => 150000
54895 => 50000
150000 - 50000 = 100000
When numbers have different magnitudes, round each number to the next highest magnitude, such as in this problem.

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