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Cornerstone · Grades 3–5 Keystones #1 23 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 7x - 15 = 13

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 37, 11, 13, 9, 13, 45, 19

    Answer: 21

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