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Cornerstone · Grades 3–5 Keystones #1 15 February 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 15 February 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 1⁄4

    Answer: 17⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x - 11 = 52

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 4:3:1

    Answer: 88, 66 and 22
  5. 5. Statistics Mean

    Find the mean of: 13, 15, 17, 12, 11

    Answer: 13.6

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