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

Five GCSE retrieval questions · 1 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 5⁄12

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 25

    Answer: x = 11
  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

    Divide 112 in the ratio 4:1:2

    Answer: 64, 16 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 46, 24, 46, 30, 38, 43, 50

    Answer: 39.6

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