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Cornerstone · Grades 3–5 Keystones #1 25 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄7

    Answer: 20⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 58

    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 210 in the ratio 3:3:1

    Answer: 90, 90 and 30
  5. 5. Statistics Mean

    Find the mean of: 13, 6, 17, 2

    Answer: 9.5

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