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Cornerstone · Grades 3–5 Keystones #1 10 March 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 10 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x - 7 = 42

    Answer: x = 7
  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 96 in the ratio 1:2:1

    Answer: 24, 48 and 24
  5. 5. Statistics Mean

    Find the mean of: 9, 12, 19

    Answer: 13.333333333333

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