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Cornerstone · Grades 3–5 Keystones #1 22 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 20 = 10

    Answer: x = 6
  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

    Share 75 in the ratio 1:4

    Answer: 15 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 19, 18, 37, 36, 38, 16

    Answer: 27.3

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