Name:____________________
Date:_________________
Front-End Estimation
Estimate the sum or difference by using front-end estimation.
1.
2.
22
+13
51
-26
+
-
3
3.
3
4.
27
-14
357
+265
-
+
3
5.
3
6.
567
+228
43
-19
+
-
3
7.
3
8.
369
-234
46
+28
3
9.
+
+
3
+
+
3
10.
468
-378
169
+678
3
12.
11.
19
+24
+
+
632
-176
3
3
www.softschools.com
Name:____________________
Date:_________________
Front-End Estimation
Estimate the sum or difference by using front-end estimation.
1.
2.
22
+13
20
+10
51
-26
30
3.
50
-30
20
4.
27
-14
30
-10
357
+265
20
5.
400
+300
700
6.
567
+228
43
-19
600
+200
800
7.
40
-20
20
8.
369
-234
46
+28
400
-200
200
9.
50
+30
80
10.
468
-378
500
-400
169
+678
100
200
+700
900
12.
11.
19
+24
20
+20
40
632
-176
600
-200
400
www.softschools.com