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Cornerstone · Grades 3–5 Keystones #1 27 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 2⁄3

    Answer: 31⁄24
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 92

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 196 in the ratio 3:3:1

    Answer: 84, 84 and 28
  5. 5. Statistics Mean

    Find the mean of: 17, 3, 9, 12

    Answer: 10.25

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