Answers

2015-07-22T19:13:47+08:00
2015-07-22T19:59:22+08:00
845 620
Because:
845 621
2 is the number in the tenths place. The number next to it in the right side (in the ones place) is 1.
845 621
 1 is a number below 5 so you have to round down the number 2.
845 620
Round down means that you copy the same number and make all the numbers at the right of the number, zero (0).
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