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Cornerstone Aug 24 - 30 25 questions
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Monday 24 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 2⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 6x - 19 = 17

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 11.31cm
  4. 4. Ratio

    Divide 196 in the ratio 1:4:2

    Answer: 28, 112 and 56
  5. 5. Statistics

    Find the mean of: 12, 8, 6, 18, 18

    Answer: 12.4

Tuesday 25 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄8 + 1⁄7

    Answer: 25⁄28
  2. 2. Algebra

    Solve: 2x + 9 = 25

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 120 in the ratio 1:1:4

    Answer: 20, 20 and 80
  5. 5. Statistics

    Calculate the mean of: 43, 32, 23, 48, 15, 35

    Answer: 32.7

Wednesday 26 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 6x + 5 = 23

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 14.14cm
  4. 4. Ratio

    Divide 150 in the ratio 1:1:4

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

    Calculate the mean of: 50, 7, 12, 50, 17, 37, 46

    Answer: 31.3

Thursday 27 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 2⁄3

    Answer: 31⁄24
  2. 2. Algebra

    Solve: 7x - 6 = 92

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Divide 196 in the ratio 3:3:1

    Answer: 84, 84 and 28
  5. 5. Statistics

    Find the mean of: 17, 3, 9, 12

    Answer: 10.25

Friday 28 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 2⁄4

    Answer: 11⁄10
  2. 2. Algebra

    Solve: 3x - 9 = 6

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 7cm

    Answer: 8.6cm
  4. 4. Ratio

    Divide 208 in the ratio 3:2:3

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

    Find the mean of: 19, 10, 2, 19, 11

    Answer: 12.2