CAIE: O Level - Mathematics D 4024 - Paper 1

Numbers / Estimation and Approximation

KEYPOINTS:

All non-zero digits are significant.
All zero (zeros) between non-zero digits is (are) significant. e.g. 205 (3 sf), 2.05 (3 sf)
In whole numbers, zeros after the last non-zero digit are not significant. e.g. 500 (1 sf), 1300 (2 sf)
In decimals, zeros before the first non-zero digit are not significant. e.g. 0.059 (2 sf)
In decimals, zeros after the last non-zero digits are significant. e.g. 2.30 (3 sf)

KNOWLEDGE REQUIRED:

Significant figures, decimal places and rounding off numbers

Past Papers Topic Wise Questions O Level: Mathematics D 4024 - Paper 1 Numbers | Estimation and Approximation

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