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Cornerstone · Grades 3–5 Keystones #1 26 October 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 26 October 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 4⁄7

    Answer: 34⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x - 12 = -2

    Answer: x = 5
  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 4:2:3

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

    Find the mean of: 11, 6, 2, 13

    Answer: 8

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