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Cornerstone · Grades 3–5 Keystones #1 29 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x - 18 = 52

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 3:2

    Answer: 42 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 28, 43, 46, 14, 24, 47, 11. Give your answer to 2 decimal places

    Answer: 30.43