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Cornerstone · Grades 3–5 Keystones #1 19 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 80

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 1:2:1

    Answer: 26, 52 and 26
  5. 5. Statistics Mean

    Find the mean of: 16, 14, 9, 9

    Answer: 12

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