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Cornerstone · Grades 3–5 Keystones #1 24 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x - 8 = 48

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 6cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 3:4:2

    Answer: 90, 120 and 60
  5. 5. Statistics Mean

    Find the mean of: 16, 12, 4, 6

    Answer: 9.5

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