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Cornerstone · Grades 3–5 Keystones #1 14 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 1⁄4

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 2

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 2:1:4

    Answer: 44, 22 and 88
  5. 5. Statistics Mean

    Find the mean of: 4, 7, 5

    Answer: 5.3333333333333

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