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Cornerstone · Grades 3–5 Keystones #1 21 August 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 5⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 34

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 153 in the ratio 2:3:4

    Answer: 34, 51 and 68
  5. 5. Statistics Mean

    Find the mean of: 8, 14, 10, 20

    Answer: 13

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