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Cornerstone · Grades 3–5 Keystones #1 20 February 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 7⁄10

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

    Solve: 8x - 10 = 62

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 203 in the ratio 4:1:2

    Answer: 116, 29 and 58
  5. 5. Statistics Mean

    Find the mean of: 12, 11, 6, 7

    Answer: 9

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