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Cornerstone · Grades 3–5 Keystones #1 9 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 4⁄5

    Answer: 48⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x + 9 = 31

    Answer: x = 11
  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

    Divide 117 in the ratio 2:3:4

    Answer: 26, 39 and 52
  5. 5. Statistics Mean

    Find the mean of: 7, 6, 19, 20, 6

    Answer: 11.6

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