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Cornerstone · Grades 3–5 Keystones #1 31 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 March 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 + 4 = 40

    Answer: x = 9
  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 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 9, 43, 7, 29, 31, 6, 18, 19

    Answer: 20.3

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