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Cornerstone · Grades 3–5 Keystones #1 29 January 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 29 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 26

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 243 in the ratio 4:2:3

    Answer: 108, 54 and 81
  5. 5. Statistics Mean

    Find the mean of: 12, 4, 19

    Answer: 11.666666666667

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