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

Five GCSE retrieval questions · 7 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄4

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 2x - 8 = 4

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 77 in the ratio 1:3:3

    Answer: 11, 33 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 34, 42, 7, 12, 10, 11. Give your answer to 2 decimal places

    Answer: 19.33

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