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Cornerstone · Grades 3–5 Keystones #1 6 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 3⁄4

    Answer: 13⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 47

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 3:4:2

    Answer: 54, 72 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 38, 34, 31, 29, 14, 49, 36, 22. Give your answer to 2 decimal places

    Answer: 31.63

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