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

Five GCSE retrieval questions · 5 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 5⁄12

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

    Solve: 5x - 11 = 29

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

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 2:1:1

    Answer: 100, 50 and 50
  5. 5. Statistics Mean

    Calculate the mean of: 21, 32, 26, 38, 37, 9. Give your answer to 2 decimal places

    Answer: 27.17

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