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Cornerstone · Grades 3–5 Keystones #1 10 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 15

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

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Find the mean of: 5, 18, 13

    Answer: 12

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