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Cornerstone · Grades 3–5 Keystones #1 23 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 8x - 17 = 39

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Divide 232 in the ratio 3:2:3

    Answer: 87, 58 and 87
  5. 5. Statistics Mean

    Find the mean of: 14, 19, 4, 18, 15

    Answer: 14

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