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Cornerstone · Grades 3–5 Keystones #1 23 April 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 4⁄6

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x - 18 = 30

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Divide 78 in the ratio 2:1:3

    Answer: 26, 13 and 39
  5. 5. Statistics Mean

    Find the mean of: 16, 2, 20, 3, 19

    Answer: 12

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