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Cornerstone · Grades 3–5 Keystones #1 17 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 39

    Answer: x = 11
  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

    Share 30 in the ratio 1:4

    Answer: 6 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 12, 15, 34, 19, 35, 5, 11

    Answer: 18.7

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