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

Five GCSE retrieval questions · 5 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 5⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 9 = 69

    Answer: x = 10
  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 110 in the ratio 1:2:2

    Answer: 22, 44 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 24, 45, 27, 6, 23, 45, 12, 14

    Answer: 24.5

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