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Cornerstone Apr 29 - May 5 25 questions
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Monday 29 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x + 13 = 57

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 11cm

    Answer: 16.28cm
  4. 4. Ratio

    Divide 120 in the ratio 3:1:1

    Answer: 72, 24 and 24
  5. 5. Statistics

    Calculate the mean of: 30, 41, 7, 38, 7, 19

    Answer: 23.7

Tuesday 30 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 2⁄4

    Answer: 4⁄3
  2. 2. Algebra

    Solve: 2x + 8 = 22

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Divide 176 in the ratio 3:4:4

    Answer: 48, 64 and 64
  5. 5. Statistics

    Calculate the mean of: 50, 32, 34, 35, 50, 26, 49, 17

    Answer: 36.6

Wednesday 1 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 8x - 5 = 115

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 14cm

    Answer: 15.65cm
  4. 4. Ratio

    Divide 126 in the ratio 4:2:1

    Answer: 72, 36 and 18
  5. 5. Statistics

    Calculate the mean of: 46, 47, 6, 40, 26, 26

    Answer: 31.8

Thursday 2 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 2⁄4

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 2x - 5 = 13

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 85 in the ratio 3:1:1

    Answer: 51, 17 and 17
  5. 5. Statistics

    Calculate the mean of: 48, 7, 13, 36, 27, 45, 22

    Answer: 28.3

Friday 3 May 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 3⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x + 5 = 33

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 9.85cm
  4. 4. Ratio

    Divide 145 in the ratio 2:2:1

    Answer: 58, 58 and 29
  5. 5. Statistics

    Find the mean of: 2, 12, 7, 18, 7

    Answer: 9.2