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Cornerstone · Grades 3–5 Keystones #1 7 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 5⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 15 = 17

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

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 125 in the ratio 3:1:1

    Answer: 75, 25 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 25, 14, 43, 12, 24, 16, 11, 13

    Answer: 19.75