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Cornerstone · Grades 3–5 Keystones #1 19 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄7

    Answer: 10⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 22

    Answer: x = 6
  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

    Share 63 in the ratio 3:4

    Answer: 27 and 36
  5. 5. Statistics Mean

    Find the mean of: 6, 14, 14, 4

    Answer: 9.5

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