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

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

  1. 1. Number Adding fractions

    Add: 1⁄8 + 1⁄3

    Answer: 11⁄24
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 42

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 3:3:2

    Answer: 81, 81 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 29, 35, 27, 26, 8, 44. Give your answer to 2 decimal places

    Answer: 28.17

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