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Cornerstone · Grades 3–5 Keystones #1 6 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x - 10 = 26

    Answer: x = 12
  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 138 in the ratio 1:1:4

    Answer: 23, 23 and 92
  5. 5. Statistics Mean

    Find the mean of: 10, 9, 13, 8

    Answer: 10

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