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Cornerstone · Grades 3–5 Keystones #1 13 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄5

    Answer: 13⁄20
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 28

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 242 in the ratio 4:4:3

    Answer: 88, 88 and 66
  5. 5. Statistics Mean

    Find the mean of: 19, 7, 9, 12, 7

    Answer: 10.8

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