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Cornerstone · Grades 3–5 Keystones #1 20 March 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 1⁄3

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 2x + 5 = 13

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

    Calculate the hypotenuse when a = 5cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics Mean

    Find the mean of: 13, 12, 17

    Answer: 14

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