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Cornerstone · Grades 3–5 Keystones #1 14 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄8

    Answer: 25⁄24
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 38

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 3:2:4

    Answer: 48, 32 and 64
  5. 5. Statistics Mean

    Find the mean of: 8, 2, 2

    Answer: 4

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