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Cornerstone · Grades 3–5 Keystones #1 16 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 16 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 2⁄3

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 52

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

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 2:4:1

    Answer: 38, 76 and 19
  5. 5. Statistics Mean

    Find the mean of: 21, 15, 6, 18

    Answer: 15

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