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Cornerstone · Grades 3–5 Keystones #1 20 February 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄6

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

    Solve: 6x - 6 = 60

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 55 in the ratio 1:2:2

    Answer: 11, 22 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 25, 30, 20, 38, 30, 23, 29

    Answer: 27.9

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