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Cornerstone · Grades 3–5 Keystones #1 19 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄7

    Answer: 33⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 43

    Answer: x = 7
  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 117 in the ratio 3:2:4

    Answer: 39, 26 and 52
  5. 5. Statistics Mean

    Find the mean of: 7, 20, 24, 5

    Answer: 14

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