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Cornerstone · Grades 3–5 Keystones #1 29 October 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 29 October 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 1⁄8

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

    Solve: 5x - 8 = 62

    Answer: x = 14
  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

    Divide 261 in the ratio 3:4:2

    Answer: 87, 116 and 58
  5. 5. Statistics Mean

    Find the mean of: 20, 8, 10, 19, 6

    Answer: 12.6

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