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Cornerstone · Grades 3–5 Keystones #1 2 October 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 3⁄4

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 53

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 152 in the ratio 3:3:2

    Answer: 57, 57 and 38
  5. 5. Statistics Mean

    Find the mean of: 20, 6, 4

    Answer: 10

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