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Cornerstone · Grades 3–5 Keystones #1 26 September 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 26 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 61

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 138 in the ratio 1:3:2

    Answer: 23, 69 and 46
  5. 5. Statistics Mean

    Find the mean of: 9, 12, 8, 17, 20

    Answer: 13.2

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