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Cornerstone · Grades 3–5 Keystones #1 13 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 5⁄6

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x - 10 = 34

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:3

    Answer: 20 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 9, 19, 25, 13, 20, 38, 35

    Answer: 22.7

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