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Cornerstone Oct 14 - 20 25 questions
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Monday 14 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 4⁄7

    Answer: 27⁄35
  2. 2. Algebra

    Solve: 3x - 6 = 6

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 9cm

    Answer: 9.85cm
  4. 4. Ratio

    Divide 261 in the ratio 3:4:2

    Answer: 87, 116 and 58
  5. 5. Statistics

    Find the mean of: 13, 8, 14, 17, 17

    Answer: 13.8

Tuesday 15 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 4⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 2x + 4 = 14

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Divide 77 in the ratio 2:2:3

    Answer: 22, 22 and 33
  5. 5. Statistics

    Calculate the mean of: 25, 32, 17, 21, 19, 5

    Answer: 19.8

Wednesday 16 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 3⁄7

    Answer: 53⁄42
  2. 2. Algebra

    Solve: 2x + 3 = 17

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 8cm

    Answer: 13.6cm
  4. 4. Ratio

    Divide 175 in the ratio 3:1:3

    Answer: 75, 25 and 75
  5. 5. Statistics

    Calculate the mean of: 16, 24, 23, 50, 46, 43, 21, 26

    Answer: 31.1

Thursday 17 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄9 + 6⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 5x - 16 = 34

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 72 in the ratio 2:1:3

    Answer: 24, 12 and 36
  5. 5. Statistics

    Find the mean of: 6, 10, 10, 14, 14

    Answer: 10.8

Friday 18 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 3x - 8 = 34

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 12cm

    Answer: 12.65cm
  4. 4. Ratio

    Divide 196 in the ratio 1:3:3

    Answer: 28, 84 and 84
  5. 5. Statistics

    Find the mean of: 2, 11, 15, 17

    Answer: 11.25