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

  1. 1. Number Adding fractions

    Add: 1⁄6 + 5⁄7

    Answer: 37⁄42
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 45

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 1:4:1

    Answer: 22, 88 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 47, 6, 17, 26, 49, 7, 25, 34

    Answer: 26.4

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