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Cornerstone · Grades 3–5 Keystones #1 6 March 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 March 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 3⁄10

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

    Solve: 7x - 7 = 35

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 3:1:1

    Answer: 48, 16 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 16, 41, 15, 41, 32, 31, 5, 45

    Answer: 28.25