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Cornerstone · Grades 3–5 Keystones #1 14 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 32

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 12, 7, 14, 13, 19

    Answer: 13

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