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Cornerstone · Grades 3–5 Keystones #1 29 December 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 29 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄6

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 38

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 3:1

    Answer: 27 and 9
  5. 5. Statistics Mean

    Calculate the mean of: 21, 14, 23, 33, 38, 32, 7, 34

    Answer: 25.3

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