Round to the nearest 10
78
80
495
500
15+29+15+13
72
709+158
867
244-204
40
34
30
701
700
27+12+48+12
99
730+299
1,029
658-104
554
29
30
379
400
22+12+16+45
95
137+461
598
867-535
332
115
120
733
700
13+48+18+19
98
771+330
1,101
577-264
313
354
350
999
1,000
12+34+40+13
13
950+480
1,430
716-603
113