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Cornerstone · Grades 3–5 Keystones #1 2 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 4⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 29

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

    Calculate the hypotenuse when a = 11cm and b = 13cm

    Answer: 17.03cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics Mean

    Find the mean of: 5, 15, 19, 14

    Answer: 13.25

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