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Cornerstone · Grades 3–5 Keystones #1 6 February 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 6 February 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 30

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 286 in the ratio 4:3:4

    Answer: 104, 78 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 9, 20, 10, 43, 42, 15, 8

    Answer: 21

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