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Cornerstone · Grades 3–5 Keystones #1 7 January 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 January 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 6 = 26

    Answer: x = 4
  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 32 in the ratio 1:3

    Answer: 8 and 24
  5. 5. Statistics Mean

    Find the mean of: 20, 12, 12, 17

    Answer: 15.25

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