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© Boardworks Ltd 2004 1 of 60 KS3 Mathematics A1 Algebraic expressions

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© Boardworks Ltd 2004 2 of 60 A1.4 Dividing terms Contents A1 Algebraic expressions A1.3 Multiplying terms A1.2 Collecting like terms A1.1 Writing expressions A1.5 Factorising expressions A1.6 Substitution

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© Boardworks Ltd 2004 3 of 60 Dividing terms Remember, in algebra we do not usually use the division sign, ÷. Instead we write the number or term we are dividing by underneath like a fraction. For example, ( a + b ) ÷ c is written as a + b c

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© Boardworks Ltd 2004 4 of 60 Like a fraction, we can often simplify expressions by cancelling. For example, n 3 ÷ n 2 = n3n3 n2n2 = n × n × nn × n × n n × nn × n 1 1 1 1 = n 6 p 2 ÷ 3 p = 6p26p2 3p3p = 6 × p × p 3 × p 2 1 1 1 = 2 p Dividing terms

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© Boardworks Ltd 2004 5 of 60 Algebraic areas

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© Boardworks Ltd 2004 6 of 60 Hexagon Puzzle

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© Boardworks Ltd 2004 7 of 60 Algebraic multiplication square

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Variables and Algebraic Expressions 1-3. Vocabulary Variable- a letter represents a number that can vary. Constant- a number that does not change. Algebraic.

Variables and Algebraic Expressions 1-3. Vocabulary Variable- a letter represents a number that can vary. Constant- a number that does not change. Algebraic.

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