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Cornerstone · Grades 3–5 Keystones #1 4 December 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄7

    Answer: 19⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x - 20 = 4

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

    Calculate the hypotenuse when a = 7cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 9, 21, 3

    Answer: 11

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