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

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 3⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 9 = 36

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 3:2

    Answer: 18 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 47, 26, 49, 23, 30, 19

    Answer: 32.3

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