Name:____________________
Date:_________________
Front-End Estimation
Estimate the sum or difference by using front-end estimation.
1.
2.
878
- 434
59
+23
-
+
3
3.
3
4.
269
+168
56
- 27
+
-
3
5.
3
6.
48
- 33
562
+315
-
+
3
7.
3
8.
32
+29
878
- 223
+
3
9.
+
3
+
3
10.
731
+125
66
- 23
+
3
12.
11.
667
- 143
+
588
+267
3
+
3
www.softschools.com
Name:____________________
Date:_________________
Front-End Estimation
Estimate the sum or difference by using front-end estimation.
1.
2.
878
- 434
900
- 400
59
+23
500
3.
60
+20
80
4.
269
+168
56
- 27
300
+200
30
500
5.
60
- 30
6.
48
- 33
562
+315
50
- 30
900
20
7.
600
+300
8.
32
+29
878
- 223
30
+30
700
700
9.
900
- 200
10.
731
+125
700
+100
66
- 23
70
- 20
50
800
12.
11.
667
- 143
700
- 100
600
588
+267
600
+300
900
www.softschools.com