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Cornerstone · Grades 3–5 Keystones #1 21 September 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄6

    Answer: 11⁄30
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 31

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 119 in the ratio 4:3

    Answer: 68 and 51
  5. 5. Statistics Mean

    Find the mean of: 8, 6, 7

    Answer: 7

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