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Cornerstone · Grades 3–5 Keystones #1 30 April 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 30 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 1⁄3

    Answer: 17⁄24
  2. 2. Algebra Two-step equations

    Solve: 6x + 10 = 82

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 2:1:3

    Answer: 42, 21 and 63
  5. 5. Statistics Mean

    Find the mean of: 6, 12, 9, 3, 12

    Answer: 8.4

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