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Ireland: choose your country
Sixth Class maths · E.1 · Expressions

Evaluate expressions with one variable

Put the number in place of the letter. A number written next to a letter means multiply.

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See worked examples
  1. Evaluate 5p + 9 when p = 3.

    Answer: 24

  2. Evaluate 2t + 5 when t = 5.

    Answer: 15

  3. Evaluate 2n + 3 when n = 3.

    Answer: 9

Tip: Put the number in place of the letter. A number written next to a letter means multiply.

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