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Cornerstone · Grades 3–5 Keystones #1 9 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 6⁄8

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x + 6 = 24

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 4:1

    Answer: 24 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 35, 34, 31, 32, 32, 13

    Answer: 29.5

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