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Cornerstone · Grades 3–5 Keystones #1 22 December 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 3⁄4

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 38

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 120 in the ratio 2:1

    Answer: 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 14, 41, 49, 22, 20, 31, 9

    Answer: 26.6

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