1.4.2

Significant Figure Rounding

Test yourself

Significant Figures

The first significant figure of a number is the first digit that isn't 0. What is 0.352 to 2 significant figures? What is 0.001827 to 3 significant figures?

Illustrative background for E.G 1: Look at the 3rd significant figureIllustrative background for E.G 1: Look at the 3rd significant figure ?? "content

E.G 1: Look at the 3rd significant figure

  • If the digit is 5 or more we round up.
  • If the digit is 4 or less we round down.
Illustrative background for E.G 2: Look at the 4th significant figureIllustrative background for E.G 2: Look at the 4th significant figure ?? "content

E.G 2: Look at the 4th significant figure

  • If the digit is 5 or more we round up.
  • If the digit is 4 or less we round down.

Jump to other topics

1Number

1.1Using Numbers

1.2Fractions, Decimals & Percentages

1.3Powers & Roots

1.4Accuracy

2Algebra

2.1Introduction to Algebra

2.2Manipulating Algebra

2.3Proofs & Functions

2.4Straight Line Graphs

2.5Common Graphs

2.6Transformations & Tangents

2.7Properties of Graphs

2.8Solving Equations

2.9Inequalities

2.10Sequences

3Ratio

4Geometry

4.1Introduction to Geometry

4.2Triangles & Quadrilaterals

4.3Transformations

4.4Circle Basics

4.5Circle Theorems

4.6Measurements & Units

4.7Calculating Area

4.8Triangle Formulae

4.93D Shapes

4.10Vectors

5Probability

6Statistics

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