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Cornerstone · Grades 3–5 Keystones #1 17 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 14 = 50

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 8, 29, 45, 22, 21, 6, 25

    Answer: 22.3

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