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Cornerstone · Grades 3–5 Keystones #1 12 June 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 June 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄5

    Answer: 19⁄20
  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 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 1:2:3

    Answer: 16, 32 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 39, 9, 35, 50, 28, 25, 43. Give your answer to 2 decimal places

    Answer: 32.71

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