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Cornerstone · Grades 3–5 Keystones #1 13 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄5

    Answer: 49⁄40
  2. 2. Algebra Two-step equations

    Solve: 2x - 6 = 22

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 99 in the ratio 2:3:4

    Answer: 22, 33 and 44
  5. 5. Statistics Mean

    Find the mean of: 6, 18, 7

    Answer: 10.333333333333

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