Question

What is the nearest whole number to 9.78497918452? 1) 9 2) 10 3) 5 4) 8

Answer 1

2)10

You look at the number after the decimal which is 7 and apply the rule that 5,6,7,8,9 round up and 1,2,3,4 round down. So since 7 is part of the group that rounds up 9 then goes up to the next number which is 10.