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Cornerstone · Grades 3–5 Keystones #1 21 September 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄12 + 6⁄12

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

    Solve: 3x - 11 = 4

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Share 63 in the ratio 4:3

    Answer: 36 and 27
  5. 5. Statistics Mean

    Find the mean of: 4, 12, 2

    Answer: 6

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