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Cornerstone · Grades 3–5 Keystones #1 12 August 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄8

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 25

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

    Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 3:4:1

    Answer: 66, 88 and 22
  5. 5. Statistics Mean

    Find the mean of: 9, 3, 17, 3

    Answer: 8

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