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Cornerstone · Grades 3–5 Keystones #1 12 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x - 19 = -4

    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 180 in the ratio 4:4:1

    Answer: 80, 80 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 37, 7, 20, 44, 16, 40, 39, 21

    Answer: 28

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