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Cornerstone · Grades 3–5 Keystones #1 11 January 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x - 7 = 37

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 9.9cm
  4. 4. Ratio Sharing in a ratio

    Divide 243 in the ratio 3:4:2

    Answer: 81, 108 and 54
  5. 5. Statistics Mean

    Find the mean of: 5, 12, 10

    Answer: 9

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