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Cornerstone · Grades 3–5 Keystones #1 22 May 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 May 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 4⁄8

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x - 7 = 21

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Divide 210 in the ratio 3:1:3

    Answer: 90, 30 and 90
  5. 5. Statistics Mean

    Find the mean of: 11, 9, 13

    Answer: 11

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