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Cornerstone · Grades 3–5 Keystones #1 20 January 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 5⁄6

    Answer: 37⁄30
  2. 2. Algebra Two-step equations

    Solve: 6x - 9 = 63

    Answer: x = 12
  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 119 in the ratio 2:4:1

    Answer: 34, 68 and 17
  5. 5. Statistics Mean

    Find the mean of: 7, 14, 10, 8, 6

    Answer: 9

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