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Cornerstone · Grades 3–5 Keystones #1 3 December 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x - 6 = 2

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Share 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics Mean

    Find the mean of: 3, 12, 12

    Answer: 9

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