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Cornerstone · Grades 3–5 Keystones #1 16 October 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄5

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 60

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

    Calculate the hypotenuse when a = 10cm and b = 14cm

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Divide 240 in the ratio 3:3:2

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

    Find the mean of: 14, 10, 7, 4

    Answer: 8.75

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