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Cornerstone · Grades 3–5 Keystones #1 11 February 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄3

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 8x - 11 = 21

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

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

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:3

    Answer: 20 and 15
  5. 5. Statistics Mean

    Find the mean of: 12, 16, 9, 10, 3

    Answer: 10

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