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Cornerstone · Grades 3–5 Keystones #1 17 December 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄5

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 56

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 2:3

    Answer: 20 and 30
  5. 5. Statistics Mean

    Find the mean of: 2, 9, 9, 16

    Answer: 9

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