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Cornerstone May 24 - 30 25 questions
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Monday 24 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x + 8 = 74

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 120 in the ratio 1:1:3

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

    Find the mean of: 8, 17, 5, 9

    Answer: 9.75

Tuesday 25 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 1⁄5

    Answer: 11⁄30
  2. 2. Algebra

    Solve: 8x - 17 = 103

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 9cm

    Answer: 13.45cm
  4. 4. Ratio

    Divide 216 in the ratio 4:2:3

    Answer: 96, 48 and 72
  5. 5. Statistics

    Calculate the mean of: 45, 7, 11, 6, 34, 8, 11

    Answer: 17.4

Wednesday 26 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 3x - 8 = 31

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 234 in the ratio 1:4:4

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

    Calculate the mean of: 29, 39, 29, 32, 26, 35, 5, 24

    Answer: 27.4

Thursday 27 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄7

    Answer: 37⁄28
  2. 2. Algebra

    Solve: 5x + 13 = 73

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 9cm

    Answer: 12.04cm
  4. 4. Ratio

    Divide 160 in the ratio 3:2:3

    Answer: 60, 40 and 60
  5. 5. Statistics

    Find the mean of: 8, 2, 13

    Answer: 7.6666666666667

Friday 28 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 1⁄3

    Answer: 11⁄24
  2. 2. Algebra

    Solve: 6x + 14 = 62

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 9cm

    Answer: 10.3cm
  4. 4. Ratio

    Divide 260 in the ratio 3:3:4

    Answer: 78, 78 and 104
  5. 5. Statistics

    Find the mean of: 15, 3, 5, 7, 5

    Answer: 7