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Cornerstone · Grades 3–5 Keystones #1 2 October 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 October 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄6

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

    Solve: 4x - 9 = 51

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Find the mean of: 17, 8, 5

    Answer: 10

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