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Cornerstone · Grades 3–5 Keystones #1 16 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄7

    Answer: 31⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 35

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

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

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

    Divide 144 in the ratio 4:1:4

    Answer: 64, 16 and 64
  5. 5. Statistics Mean

    Find the mean of: 17, 8, 17

    Answer: 14

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