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Cornerstone · Grades 3–5 Keystones #1 23 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x - 11 = 34

    Answer: x = 15
  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 175 in the ratio 2:2:3

    Answer: 50, 50 and 75
  5. 5. Statistics Mean

    Calculate the mean of: 22, 33, 14, 24, 35, 42, 50, 7

    Answer: 28.4

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