Types of Number and BODMAS (AQA GCSE Maths): Flashcards

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Types of number and BODMAS
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What is an integer?

A whole number (positive, negative, or zero)

Key feature of integers

Cannot have decimal parts or be fractions

What is a rational number?

A number that can be expressed as a fraction

Three forms of rational numbers

Integers, fractions, terminating/recurring decimals

What is an irrational number?

A number that cannot be written as a simple fraction

Decimal form of irrational numbers

Never-ending, non-repeating decimals

What does BODMAS stand for?

Brackets, Other, Division, Multiplication, Addition, Subtraction

BODMAS equal priority rule

D & M have equal priority; A & S have equal priority (work left to right)

What is the reciprocal of a number?

1 divided by that number

Examples of irrational numbers

2\sqrt{2}, 3\sqrt{3}, π\pi, surds

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