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Cornerstone · Grades 3–5 Keystones #1 12 April 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 2⁄5

    Answer: 19⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 19

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

    Calculate the hypotenuse when a = 7cm and b = 6cm

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

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 7, 18, 31, 34, 8, 38

    Answer: 22.7

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