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Cornerstone · Grades 3–5 Keystones #1 27 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 51

    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

    Share 80 in the ratio 4:1

    Answer: 64 and 16
  5. 5. Statistics Mean

    Find the mean of: 6, 10, 12, 10

    Answer: 9.5

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