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Cornerstone · Grades 3–5 Keystones #1 21 June 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 June 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 4⁄5

    Answer: 58⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 12 = 15

    Answer: x = 9
  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 55 in the ratio 4:1

    Answer: 44 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 46, 30, 46, 20, 6, 25, 23, 39

    Answer: 29.4

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