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Cornerstone · Grades 3–5 Keystones #1 21 July 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 21 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 34

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 171 in the ratio 4:2:3

    Answer: 76, 38 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 17, 24, 11, 12, 25, 11

    Answer: 16.7

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