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round the following 25.635 to 2 d.p

315.239 to 1 dp

0.3975 to 3dp
14.989 to 1 dp

Sagot :

Julieannaidn
well, you round up if the digit behind the decimal place is 5 or more and round down if the digit is 4 or less 

I guess the first is 25.64, since two decimal places means the hundredths, 3.  The digit behind is 5 , meaning that 3 will become a 4.
then 315.2
then 0.398
then 15 because the digit behind 9+ is an 8 greater than 5, which means the 9 is rounded up to 10, which is a one when it passes through the decimal point, making it 15.
sorry if my explanation sucks.  I hope this helps.
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