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Cornerstone · Grades 3–5 Keystones #1 17 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 2⁄6

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 16

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 180 in the ratio 3:4:2

    Answer: 60, 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 15, 31, 6, 12, 38, 19, 30

    Answer: 21.6

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