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Cornerstone · Grades 3–5 Keystones #1 23 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 23 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄6

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 57

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Divide 207 in the ratio 3:2:4

    Answer: 69, 46 and 92
  5. 5. Statistics Mean

    Find the mean of: 8, 17, 2

    Answer: 9

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