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Cornerstone · Grades 3–5 Keystones #1 19 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 64

    Answer: x = 12
  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 216 in the ratio 2:1:1

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

    Find the mean of: 3, 13, 9, 17, 3

    Answer: 9

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