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Cornerstone Mar 25 - 31 25 questions
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Monday 25 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄7

    Answer: 20⁄21
  2. 2. Algebra

    Solve: 6x - 8 = 58

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Divide 210 in the ratio 3:3:1

    Answer: 90, 90 and 30
  5. 5. Statistics

    Find the mean of: 13, 6, 17, 2

    Answer: 9.5

Tuesday 26 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 5x - 9 = 36

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 8cm

    Answer: 13.6cm
  4. 4. Ratio

    Divide 120 in the ratio 1:4:1

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

    Find the mean of: 14, 19, 18, 14, 17

    Answer: 16.4

Wednesday 27 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 4⁄7

    Answer: 23⁄28
  2. 2. Algebra

    Solve: 4x + 14 = 58

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio

    Divide 240 in the ratio 3:3:4

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

    Calculate the mean of: 45, 44, 29, 20, 6, 41, 21

    Answer: 29.4

Thursday 28 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 3⁄4

    Answer: 25⁄28
  2. 2. Algebra

    Solve: 7x + 5 = 47

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 232 in the ratio 3:1:4

    Answer: 87, 29 and 116
  5. 5. Statistics

    Calculate the mean of: 23, 6, 36, 19, 32, 15

    Answer: 21.8

Friday 29 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 2x - 8 = 12

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 10cm

    Answer: 10.77cm
  4. 4. Ratio

    Divide 90 in the ratio 4:1:1

    Answer: 60, 15 and 15
  5. 5. Statistics

    Find the mean of: 15, 20, 10, 13

    Answer: 14.5