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Cornerstone · Grades 3–5 Keystones #1 21 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 6⁄7

    Answer: 69⁄56
  2. 2. Algebra Two-step equations

    Solve: 4x - 13 = 11

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

    Calculate the hypotenuse when a = 8cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 1:1:2

    Answer: 28, 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 6, 11, 5, 10

    Answer: 8

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