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Cornerstone · Grades 3–5 Keystones #1 16 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 28

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics Mean

    Find the mean of: 8, 9, 2, 15, 4

    Answer: 7.6

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