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Cornerstone Apr 4 - 10 25 questions
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Monday 4 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 1⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 6x - 11 = 61

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio

    Divide 130 in the ratio 2:2:1

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

    Find the mean of: 16, 10, 5, 9, 5

    Answer: 9

Tuesday 5 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 4⁄6

    Answer: 13⁄15
  2. 2. Algebra

    Solve: 2x + 10 = 18

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 144 in the ratio 3:1:2

    Answer: 72, 24 and 48
  5. 5. Statistics

    Calculate the mean of: 40, 34, 15, 42, 31, 26, 10, 29

    Answer: 28.4

Wednesday 6 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 5⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 7x + 15 = 92

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 11cm

    Answer: 14.21cm
  4. 4. Ratio

    Divide 91 in the ratio 2:4:1

    Answer: 26, 52 and 13
  5. 5. Statistics

    Calculate the mean of: 38, 32, 46, 27, 25, 50

    Answer: 36.3

Thursday 7 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 2⁄5

    Answer: 17⁄30
  2. 2. Algebra

    Solve: 5x - 14 = 16

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 261 in the ratio 1:4:4

    Answer: 29, 116 and 116
  5. 5. Statistics

    Find the mean of: 19, 10, 19

    Answer: 16

Friday 8 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 1⁄5

    Answer: 32⁄35
  2. 2. Algebra

    Solve: 2x - 11 = 7

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 168 in the ratio 2:2:3

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

    Find the mean of: 19, 6, 7, 7, 15

    Answer: 10.8