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

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 6 = 46

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 196 in the ratio 3:1:3

    Answer: 84, 28 and 84
  5. 5. Statistics Mean

    Find the mean of: 16, 4, 10

    Answer: 10

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