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Cornerstone · Grades 3–5 Keystones #1 22 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

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

    Solve: 8x - 12 = 52

    Answer: x = 8
  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 133 in the ratio 2:1:4

    Answer: 38, 19 and 76
  5. 5. Statistics Mean

    Find the mean of: 17, 14, 10

    Answer: 13.666666666667

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