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Cornerstone · Grades 3–5 Keystones #1 16 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄7

    Answer: 29⁄28
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 100

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 2:1:3

    Answer: 20, 10 and 30
  5. 5. Statistics Mean

    Find the mean of: 12, 14, 15, 16

    Answer: 14.25

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