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Cornerstone · Grades 3–5 Keystones #1 13 November 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 4⁄8

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 9 = 17

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

    Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.55cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics Mean

    Find the mean of: 19, 10, 16

    Answer: 15

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