Mrs Kelly Notes

Rounding off Decimals. If the last digit is 5 or more we increase the previous digit by 1. If the last digit is 4 or less we leave the previous digit as it is. 1 dp. = 1 number after decimal. 2.dp = 2 numbers after decimal. 3.dp = 3 numbers after decimal. 2 sf = 2 significant figures = 2 numbers all the rest zeros. Examples: ................
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