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Cornerstone · Grades 3–5 Keystones #1 20 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 2⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x + 6 = 42

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 1:3:4

    Answer: 26, 78 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 45, 13, 14, 18, 22, 17, 31, 39

    Answer: 24.9

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