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Cornerstone · Grades 3–5 Keystones #1 23 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 42

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 1:3

    Answer: 17 and 51
  5. 5. Statistics Mean

    Find the mean of: 10, 15, 20

    Answer: 15

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