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Cornerstone · Grades 3–5 Keystones #1 17 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

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

    Solve: 2x + 12 = 18

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

    Calculate the hypotenuse when a = 8cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Divide 174 in the ratio 3:1:2

    Answer: 87, 29 and 58
  5. 5. Statistics Mean

    Calculate the mean of: 43, 37, 49, 43, 37, 36, 43. Give your answer to 2 decimal places

    Answer: 41.14

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