Round to nearest 10
153
150
1658
1700
3487
5415
5000
2288
2290
60
7814
8000
3411
3410
3204
3200
9125
9100
543
1000
320
320
2910
2900
167
200
9999
10000
6745
6750
Add the numbers then round the sum to the nearest 100.
313 + 213=
526 rounds to 500
Subtract the numbers then round the difference to the nearest 100.
721- 489=
232 rounds to 200