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Cornerstone · Grades 3–5 Keystones #1 9 September 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 9 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 7⁄8

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 3x - 11 = 16

    Answer: x = 9
  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 70 in the ratio 3:2:2

    Answer: 30, 20 and 20
  5. 5. Statistics Mean

    Find the mean of: 3, 3, 6, 9, 4

    Answer: 5

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