Mathematical Concepts Flashcards

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Expression

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Mathematical statement built up from numbers and pronumerals (variables/letters) and connected by mathematical operations. An expression contains no equals sign.

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Term

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One of the components of an expression - made up of pronumerals, numbers or a combination of pronumerals and numbers.

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Pronumeral

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A letter of the alphabet or a symbol, used to represent a number or unknown.

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Like terms

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Terms with the same pronumerals (variables/letters) and same powers.

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Unlike terms

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Terms with different pronumerals (variables/letters) and different powers.

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Diagram showing like terms.

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Illustrates terms with the same pronumerals and powers.

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Factorising

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To rewrite an expression as a product of its factors, often involving the use of grouping symbols. It is the reverse of expanding.

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Factorise table with examples and answers

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Examples of factorising expressions, such as 7x + 14 = 7(x + 2).

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Substitution

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To replace a pronumeral in a formula, expression, or equation with numerical values.

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Example of substitution: Evaluate 3a - 2b for a = 10 and b = 4

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Example of substitution: 3(10) - 2(4) = 30 - 8 = 22.