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Cornerstone Aug 3 - 9 25 questions
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Monday 3 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 5⁄7

    Answer: 89⁄56
  2. 2. Algebra

    Solve: 8x - 5 = 67

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio

    Share 44 in the ratio 1:3

    Answer: 11 and 33
  5. 5. Statistics

    Find the mean of: 6, 17, 8, 7, 6

    Answer: 8.8

Tuesday 4 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: 5x - 7 = 18

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 14cm

    Answer: 16.64cm
  4. 4. Ratio

    Divide 126 in the ratio 4:1:4

    Answer: 56, 14 and 56
  5. 5. Statistics

    Calculate the mean of: 43, 24, 37, 47, 25, 19, 16

    Answer: 30.1

Wednesday 5 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄10 + 1⁄10

    Answer: 1⁄5
  2. 2. Algebra

    Solve: 2x + 7 = 31

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 182 in the ratio 4:1:2

    Answer: 104, 26 and 52
  5. 5. Statistics

    Find the mean of: 20, 15, 3, 19, 9

    Answer: 13.2

Thursday 6 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 2⁄5

    Answer: 24⁄35
  2. 2. Algebra

    Solve: 4x + 11 = 35

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 7cm

    Answer: 13.04cm
  4. 4. Ratio

    Divide 224 in the ratio 4:3:1

    Answer: 112, 84 and 28
  5. 5. Statistics

    Find the mean of: 9, 14, 18

    Answer: 13.666666666667

Friday 7 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 7x - 5 = 93

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 161 in the ratio 2:4:1

    Answer: 46, 92 and 23
  5. 5. Statistics

    Calculate the mean of: 44, 18, 24, 40, 11, 35

    Answer: 28.7