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Cornerstone · Grades 3–5 Keystones #1 24 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄8

    Answer: 17⁄24
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 44

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

    Calculate the hypotenuse when a = 8cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 3:1:1

    Answer: 42, 14 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 38, 8, 36, 24, 31, 26, 44. Give your answer to 2 decimal places

    Answer: 29.57

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