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Cornerstone · Grades 3–5 Keystones #1 25 January 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄6

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 6x + 15 = 63

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics Mean

    Find the mean of: 17, 9, 13, 9

    Answer: 12

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