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Cornerstone · Grades 3–5 Keystones #1 10 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 3⁄4

    Answer: 13⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 6 = 42

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 8cm

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 3:3:1

    Answer: 66, 66 and 22
  5. 5. Statistics Mean

    Find the mean of: 5, 7, 12, 7

    Answer: 7.75

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