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Cornerstone · Grades 3–5 Keystones #1 16 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 4⁄6

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x + 15 = 51

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 4:1:2

    Answer: 76, 19 and 38
  5. 5. Statistics Mean

    Find the mean of: 5, 20, 8

    Answer: 11

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