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Cornerstone · Grades 3–5 Keystones #1 9 October 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 3⁄7

    Answer: 43⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 8 = 31

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 3:4:4

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

    Find the mean of: 4, 5, 15, 22, 14

    Answer: 12

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