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Cornerstone · Grades 3–5 Keystones #1 3 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 3⁄8

    Answer: 23⁄40
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 32

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 153 in the ratio 1:4:4

    Answer: 17, 68 and 68
  5. 5. Statistics Mean

    Find the mean of: 2, 7, 7, 8

    Answer: 6

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