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Cornerstone · Grades 3–5 Keystones #1 22 April 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 4⁄7

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

    Solve: 6x + 7 = 25

    Answer: x = 3
  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 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 10, 25, 30, 31, 46, 17

    Answer: 26.5

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