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Cornerstone · Grades 3–5 Keystones #1 24 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄5

    Answer: 13⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 64

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 2:4:1

    Answer: 20, 40 and 10
  5. 5. Statistics Mean

    Find the mean of: 2, 19, 2

    Answer: 7.6666666666667

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