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Cornerstone Nov 25 - Dec 1 25 questions
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Monday 25 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄12 + 3⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x + 6 = 24

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 200 in the ratio 4:1:3

    Answer: 100, 25 and 75
  5. 5. Statistics

    Find the mean of: 8, 18, 10, 14

    Answer: 12.5

Tuesday 26 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 2⁄7

    Answer: 38⁄35
  2. 2. Algebra

    Solve: 3x + 12 = 27

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 5cm

    Answer: 7.81cm
  4. 4. Ratio

    Divide 136 in the ratio 3:2:3

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

    Find the mean of: 4, 10, 15, 9

    Answer: 9.5

Wednesday 27 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 8x - 9 = 55

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 96 in the ratio 1:3:2

    Answer: 16, 48 and 32
  5. 5. Statistics

    Calculate the mean of: 23, 43, 37, 41, 35, 6

    Answer: 30.8

Thursday 28 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 5x - 20 = 25

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 297 in the ratio 4:4:3

    Answer: 108, 108 and 81
  5. 5. Statistics

    Calculate the mean of: 34, 36, 46, 50, 22, 5, 8

    Answer: 28.7

Friday 29 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 4⁄5

    Answer: 13⁄10
  2. 2. Algebra

    Solve: 5x + 4 = 54

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 7cm

    Answer: 11.4cm
  4. 4. Ratio

    Divide 130 in the ratio 2:2:1

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

    Find the mean of: 17, 15, 20, 19, 16

    Answer: 17.4