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Cornerstone · Grades 3–5 Keystones #1 22 June 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x + 7 = 21

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 3:3:4

    Answer: 48, 48 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 25, 34, 41, 44, 46, 44

    Answer: 39

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