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Cornerstone Mar 16 - 22 25 questions
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Monday 16 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 4x + 13 = 41

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 168 in the ratio 1:1:2

    Answer: 42, 42 and 84
  5. 5. Statistics

    Calculate the mean of: 36, 44, 47, 32, 49, 20

    Answer: 38

Tuesday 17 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 3⁄8

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 4x - 18 = 10

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 9cm

    Answer: 12.04cm
  4. 4. Ratio

    Divide 136 in the ratio 3:2:3

    Answer: 51, 34 and 51
  5. 5. Statistics

    Find the mean of: 13, 16, 2, 4, 19

    Answer: 10.8

Wednesday 18 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 1⁄4

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 5x - 11 = 14

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 6cm

    Answer: 13.42cm
  4. 4. Ratio

    Divide 135 in the ratio 1:1:3

    Answer: 27, 27 and 81
  5. 5. Statistics

    Find the mean of: 15, 3, 4, 7

    Answer: 7.25

Thursday 19 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 3⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 2x + 11 = 19

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 156 in the ratio 2:1:3

    Answer: 52, 26 and 78
  5. 5. Statistics

    Calculate the mean of: 24, 45, 49, 13, 33, 35, 33

    Answer: 33.1

Friday 20 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 2⁄6

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 6x + 3 = 45

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 8cm

    Answer: 9.43cm
  4. 4. Ratio

    Divide 77 in the ratio 1:3:3

    Answer: 11, 33 and 33
  5. 5. Statistics

    Find the mean of: 12, 19, 2, 5

    Answer: 9.5