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Cornerstone · Grades 3–5 Keystones #1 14 November 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 14 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 1⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 36

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 170 in the ratio 3:3:4

    Answer: 51, 51 and 68
  5. 5. Statistics Mean

    Find the mean of: 19, 20, 9, 13

    Answer: 15.25

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