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

Five GCSE retrieval questions · 3 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 4⁄6

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x - 20 = 10

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 182 in the ratio 2:4:1

    Answer: 52, 104 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 41, 25, 37, 26, 20, 19, 50, 6

    Answer: 28

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