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Cornerstone · Grades 3–5 Keystones #1 27 January 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 27 January 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

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

    Solve: 5x - 7 = 28

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 4:3

    Answer: 24 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 26, 41, 43, 46, 25, 45, 21, 25

    Answer: 34

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