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Cornerstone · Grades 3–5 Keystones #1 17 October 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄8

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x - 10 = 25

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 2:3:2

    Answer: 48, 72 and 48
  5. 5. Statistics Mean

    Find the mean of: 14, 20, 7, 15

    Answer: 14

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