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Cornerstone · Grades 3–5 Keystones #1 24 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 64

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 2:3:2

    Answer: 24, 36 and 24
  5. 5. Statistics Mean

    Find the mean of: 17, 13, 19, 8

    Answer: 14.25

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