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Cornerstone Nov 12 - 18 25 questions
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Monday 12 November 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 7⁄8

    Answer: 65⁄56
  2. 2. Algebra

    Solve: 6x - 10 = 20

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Divide 152 in the ratio 3:1:4

    Answer: 57, 19 and 76
  5. 5. Statistics

    Find the mean of: 14, 14, 16, 16

    Answer: 15

Tuesday 13 November 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 4x + 9 = 53

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 10cm

    Answer: 11.18cm
  4. 4. Ratio

    Divide 192 in the ratio 3:3:2

    Answer: 72, 72 and 48
  5. 5. Statistics

    Calculate the mean of: 45, 39, 48, 49, 46, 36, 38

    Answer: 43

Wednesday 14 November 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄12 + 4⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 6x + 12 = 48

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 10cm

    Answer: 13.45cm
  4. 4. Ratio

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics

    Find the mean of: 19, 18, 11

    Answer: 16

Thursday 15 November 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 4⁄8

    Answer: 4⁄3
  2. 2. Algebra

    Solve: 2x - 19 = 3

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 114 in the ratio 2:1

    Answer: 76 and 38
  5. 5. Statistics

    Calculate the mean of: 5, 49, 9, 24, 33, 28, 34, 19

    Answer: 25.1

Friday 16 November 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x - 14 = 31

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 4cm

    Answer: 10.77cm
  4. 4. Ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics

    Calculate the mean of: 27, 25, 16, 9, 30, 18, 15

    Answer: 20