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Cornerstone · Grades 3–5 Keystones #1 14 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 5⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 67

    Answer: x = 13
  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 105 in the ratio 3:4

    Answer: 45 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 44, 43, 49, 15, 44, 7, 16

    Answer: 31.1

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