923 to the nearest tens place = 920
64 to the nearest tens place = 60
394 to the nearest tens place = 390
159.444 to the nearest tens place = 160
8,146 to the nearest tens place = 8,150
798 to the nearest tens place = 800
920
350 + 920 = 1270
923 rounded to the nearest hundred is: 900. This is because the value in the tens place "2" is less than 5. When rounding anything equal to or greater than 5 gets rounded up and everything below 5 gets rounded down.
103 to the nearest tens place = 100
6,512,162 to the nearest tens place = 6,512,160
128.27 to the nearest tens place = 130
1678 to the nearest tens place = 1,680
5,253 to the nearest tens place = 5,250
394 to the nearest tens place = 390
798 to the nearest tens place = 800
8,146 to the nearest tens place = 8,150
245 to the nearest tens place is 250