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Cornerstone · Grades 3–5 Keystones #1 30 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 1⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 17

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

    Calculate the hypotenuse when a = 8cm and b = 6cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 1:4

    Answer: 14 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 44, 50, 42, 20, 20, 25, 24, 26. Give your answer to 2 decimal places

    Answer: 31.38

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