Presentation on theme: "First look at the value of the digit in the tenths column"— Presentation transcript:
1 How to round a number with two decimal places to the nearest whole number
2 First look at the value of the digit in the tenths column 4.76Has 7 tenths5.58Has 5 tenthsHas 2 tenths3.274.32Has 3 tenths
3 You round down to the nearest whole number if the tenths digit is 0,1,2,3 or 4. 3.27 is rounded down to 34.32 is rounded down to 417.15 is rounded down to 17is rounded down to 12045.44 is rounded down to 45
4 You round up to the nearest whole number if the tenths digit is 5,6,7,8 or 9. 4.76 is rounded up to 55.58 is rounded up to 617.87 is rounded up to 18is rounded up to 12646.63 is rounded up to 47
5 Watch out for numbers which have 9 in the units column. e.gIf you are rounding up, you will make 10 units. This makes 1 ten, so you have to round to the next ten (in this case to 10).For the same reason, becomes 3019.75 becomes 20And becomes 460
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