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Cornerstone · Grades 3–5 Keystones #1 22 September 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 22 September 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 2x - 6 = 4

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 264 in the ratio 4:4:3

    Answer: 96, 96 and 72
  5. 5. Statistics Mean

    Find the mean of: 5, 12, 16, 15

    Answer: 12

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