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Cornerstone · Grades 3–5 Keystones #1 3 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 18 = 70

    Answer: x = 11
  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

    Divide 189 in the ratio 2:4:1

    Answer: 54, 108 and 27
  5. 5. Statistics Mean

    Find the mean of: 5, 10, 5, 16

    Answer: 9

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