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Cornerstone · Grades 3–5 Keystones #1 31 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 8x - 5 = 59

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 4:1:4

    Answer: 48, 12 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 18, 19, 31, 9, 22, 43, 8. Give your answer to 2 decimal places

    Answer: 21.43

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