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Cornerstone · Grades 3–5 Keystones #1 11 January 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 January 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄5

    Answer: 49⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x - 16 = 12

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

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Find the mean of: 5, 19, 5, 7

    Answer: 9

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