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Cornerstone · Grades 3–5 Keystones #1 19 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 37

    Answer: x = 8
  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 102 in the ratio 2:1

    Answer: 68 and 34
  5. 5. Statistics Mean

    Find the mean of: 6, 13, 11, 5, 13

    Answer: 9.6

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