## Estimated Addition - Sample Math Practice Problems

The math problems below can be generated by MathScore.com, a math practice program for schools and individual families. References to complexity and mode refer to the overall difficulty of the problems as they appear in the main program. In the main program, all problems are automatically graded and the difficulty adapts dynamically based on performance. Answers to these sample questions appear at the bottom of the page. This page does not grade your responses.

See some of our other supported math practice problems.

### Complexity=60

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 42+ 32
Estimate
2.
 38+ 60
Estimate

### Complexity=100

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 76+ 90
Estimate
2.
 62+ 94
Estimate

### Complexity=200

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 85+ 173
Estimate
2.
 79+ 95
Estimate

### Complexity=700

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 676+ 515
Estimate
2.
 320+ 378
Estimate

### Complexity=1000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 569+ 705
Estimate
2.
 822+ 977
Estimate

### Complexity=5000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 2133+ 4328
Estimate
2.
 4899+ 3829
Estimate

### Complexity=10000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 9037+ 5211
Estimate
2.
 9449+ 8608
Estimate

### Complexity=20000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 19020+ 19813
Estimate
2.
 12812+ 17717
Estimate

### Complexity=100000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1.
 78592+ 93412
Estimate
2.
 97819+ 85743
Estimate

### Complexity=60

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 42+ 32
Estimate
Solution
To get the estimated answer, estimate each operand.
42 => 40
32 => 30
40 + 30 = 70

42 => 42
32 => 32
42 + 32 = 74

2
 38+ 60
Estimate
Solution
To get the estimated answer, estimate each operand.
38 => 40
60 => 60
40 + 60 = 100

38 => 38
60 => 60
38 + 60 = 98

### Complexity=100

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 76+ 90
Estimate
Solution
To get the estimated answer, estimate each operand.
76 => 80
90 => 90
80 + 90 = 170

76 => 76
90 => 90
76 + 90 = 166

2
 62+ 94
Estimate
Solution
To get the estimated answer, estimate each operand.
62 => 60
94 => 90
60 + 90 = 150

62 => 62
94 => 94
62 + 94 = 156

### Complexity=200

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 85+ 173
Estimate
Solution
To get the estimated answer, estimate each operand.
85 => 90
173 => 170
90 + 170 = 260

85 => 90
173 => 200
90 + 200 = 290

2
 79+ 95
Estimate
Solution
To get the estimated answer, estimate each operand.
79 => 80
95 => 100
80 + 100 = 180

79 => 79
95 => 95
79 + 95 = 174

### Complexity=700

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 676+ 515
Estimate
Solution
To get the estimated answer, estimate each operand.
676 => 700
515 => 500
700 + 500 = 1200

676 => 680
515 => 520
680 + 520 = 1200

2
 320+ 378
Estimate
Solution
To get the estimated answer, estimate each operand.
320 => 320
378 => 380
320 + 380 = 700

320 => 300
378 => 400
300 + 400 = 700

### Complexity=1000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 569+ 705
Estimate
Solution
To get the estimated answer, estimate each operand.
569 => 600
705 => 700
600 + 700 = 1300

569 => 570
705 => 710
570 + 710 = 1280

2
 822+ 977
Estimate
Solution
To get the estimated answer, estimate each operand.
822 => 800
977 => 1000
800 + 1000 = 1800

822 => 820
977 => 980
820 + 980 = 1800

### Complexity=5000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 2133+ 4328
Estimate
Solution
To get the estimated answer, estimate each operand.
2133 => 2000
4328 => 4000
2000 + 4000 = 6000

2133 => 2100
4328 => 4300
2100 + 4300 = 6400

2
 4899+ 3829
Estimate
Solution
To get the estimated answer, estimate each operand.
4899 => 5000
3829 => 4000
5000 + 4000 = 9000

4899 => 4900
3829 => 3800
4900 + 3800 = 8700

### Complexity=10000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 9037+ 5211
Estimate
Solution
To get the estimated answer, estimate each operand.
9037 => 9000
5211 => 5000
9000 + 5000 = 14000

9037 => 9000
5211 => 5200
9000 + 5200 = 14200

2
 9449+ 8608
Estimate
Solution
To get the estimated answer, estimate each operand.
9449 => 9000
8608 => 9000
9000 + 9000 = 18000

9449 => 9400
8608 => 8600
9400 + 8600 = 18000

### Complexity=20000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 19020+ 19813
Estimate
Solution
To get the estimated answer, estimate each operand.
19020 => 19000
19813 => 20000
19000 + 20000 = 39000

19020 => 20000
19813 => 20000
20000 + 20000 = 40000

2
 12812+ 17717
Estimate
Solution
To get the estimated answer, estimate each operand.
12812 => 13000
17717 => 18000
13000 + 18000 = 31000

12812 => 10000
17717 => 20000
10000 + 20000 = 30000

### Complexity=100000

Estimate the sum using the highest practical magnitude.
Example 1: 53 + 19 => 50 + 20
Example 2: 123 + 57 => 120 + 60
Example 3: 1598 + 2301 => 2000 + 2000
1
 78592+ 93412
Estimate
Solution
To get the estimated answer, estimate each operand.
78592 => 80000
93412 => 90000
80000 + 90000 = 170000

78592 => 79000
93412 => 93000
79000 + 93000 = 172000

2
 97819+ 85743
Estimate
Solution
To get the estimated answer, estimate each operand.
97819 => 100000
85743 => 90000
100000 + 90000 = 190000