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Cornerstone · Grades 3–5 Keystones #1 8 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄4

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

    Solve: 3x + 7 = 40

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 1:1:4

    Answer: 21, 21 and 84
  5. 5. Statistics Mean

    Find the mean of: 5, 16, 12

    Answer: 11

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