# Rounding Numbers - Unit 1

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- Created by: Becky Langley
- Created on: 23-05-16 08:42

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- Rounding Numbers
- 3 basic rules
- 1) Identify the position of the last didgit
- 2) Then look at the next digit to the right - called the decider.
- 3) If the decider is 5 or more round up the last digit. if the decider is less than 5 leave the last digit as it is.

- Decimal Places (D.P)
- To round off to 4 decimal place the last digit will be the 4th one after the decimal point.
- There must be no more digits after the last digit not even zeros.

- Significant figures (S.F)
- 2) The 2nd, 3rd, 4th, etc. significant figures follow on immediately after the 1st, regardless of being zeros or not zeros
- 3) After rounding off the last digit, end zeros must be filled up, but not beyond, the decimal point.

- 3 basic rules

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