1.15.15

Ordinary Numbers to Standard Form

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Standard Form

Standard form is an easier way to write very big and very small numbers.

Numbers in standard form

Numbers in standard form

  • Numbers in standard form always have:
    • One digit before the decimal point (NOT 0).
    • A ×104 part (the 4 can be any positive or negative number).
Ordinary numbers → standard form

Ordinary numbers → standard form

  • 45,000 is a large number.
  • You can convert 45,000 into standard form by:
    • Counting how many jumps the decimal point makes to the left until there is one digit before the decimal point (4 jumps).
    • Multiplying 4.5 by 104 → 4.5 × 104
Ordinary numbers → standard form 2

Ordinary numbers → standard form 2

  • 0.000064 is a small number.
  • You can convert 0.000064 into standard form by:
    • Counting how many jumps the decimal point makes to the right until there is one digit before the decimal point (5 jumps).
    • Multiplying 6.4 by 10-5 → 6.4 × 10-5
Positive or negative powers?

Positive or negative powers?

  • The power depends on how many times you move the decimal point.
  • Large numbers have × 10positive number when in standard form.
  • Small numbers have × 10negative number when in standard form.
Jump to other topics
1

Number

1.1

Place Value & Ordering

1.2

Numerical Operations

1.3

Structure of Calculations

1.4

Fractions

1.5

Numerical Operations on Fractions

1.6

Roots & Powers

1.7

Numerical Skills

1.8

Factors & Multiples

1.9

Surds

1.10

Standard Form

1.11

Fractions, Decimals & Percentages

1.12

Percentage Change

1.13

Rounding & Estimation

1.14

Bounds & Accuracy

1.15

Using Numbers

1.16

Fractions, Decimals & Percentages

1.17

Powers & Roots

1.18

Accuracy

2

Algebra

2.1

Algebraic Notation

2.2

Substitution & Simplification

2.3

Brackets

2.4

Algebraic Fractions

2.5

Rearranging

2.6

Functions

2.7

Solving Linear Equations

2.8

Inequalities

2.9

Solving Quadratic Equations

2.10

Simultaneous Equations

2.11

Iteration

2.12

Sequences

2.13

Linear Graphs

2.14

Introduction to Algebra

2.15

Manipulating Algebra

2.16

Proofs & Functions

2.17

Straight Line Graphs

2.18

Common Graphs

2.19

Transformations & Tangents

2.20

Properties of Graphs

2.21

Solving Equations

2.22

Inequalities

2.23

Sequences

3

Ratio

3.1

Unit Conversions

3.2

Compound Units

3.3

Ratio Fundamentals

3.4

Advanced Ratio and Scale

3.5

Proportion

3.6

Algebraic Proportion

3.7

Ratios in Practice

3.8

Manipulating Ratios

3.9

Percentage & Interest

3.10

Proportion

3.11

Gradient

4

Geometry

4.1

Area & Perimeter

4.2

Angles

4.3

Trigonometry

4.4

Similarity & Congruence

4.5

Circle Geometry

4.6

Circle Theorems

4.7

Pythagoras

4.8

Surface Area

4.9

Volume

4.10

Vectors

4.11

Introduction to Geometry

4.12

Triangles & Quadrilaterals

4.13

Transformations

4.14

Circle Basics

4.15

Circle Theorems

4.16

Measurements & Units

4.17

Calculating Area

4.18

Triangle Formulae

4.19

3D Shapes

4.20

Vectors

5

Probability

6

Statistics

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