Estimate
Estimate the total of
743 + 213
Round to the nearest tens place.
740 + 210
950
Solve with standard algorithm. Show your work.
845
+ 731
____________
1,576
34 x 5
170
35 x 9
35 x 10 = 350
35 x 1 = 35
350-35 =
315
Estimate the total of
385 + 480
Round to the nearest tens place.
390 + 480
870
Solve with standard algorithm. Show your work.
623
+ 176
____________
796
27 x 5
14 x 9
140-14 = 136
914 + 458
Round to the nearest tens place.
910 + 460
1, 370
Solve with standard algorithm. Show your work.
3695
+ 2164
____________
5859
92 x 5
460
36 x 9
360-36 =
324
Estimate the total of
734 + 902
Round to the nearest hundreds place.
700 + 900
1600
Solve with standard algorithm. Show your work.
1487
+ 9025
____________
10,512
46 x 5
230
28 x 9
280-28 =
252
Estimate the total of
945 +1,538
Round to the nearest hundreds.
900 + 1,500
2,400
Solve with standard algorithm. Show your work.
10479
+ 92374
____________
102, 853
41 x 5
205
24 x 9
240-24 =
216