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Cornerstone Mar 9 - 15 25 questions
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Monday 9 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 2⁄3

    Answer: 22⁄15
  2. 2. Algebra

    Solve: 7x - 10 = 18

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics

    Calculate the mean of: 19, 32, 41, 27, 33, 16, 37

    Answer: 29.3

Tuesday 10 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 1⁄3

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 8x - 14 = 42

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 5cm

    Answer: 5.83cm
  4. 4. Ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics

    Calculate the mean of: 29, 14, 27, 40, 19, 11, 23

    Answer: 23.3

Wednesday 11 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x + 15 = 48

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Share 48 in the ratio 1:3

    Answer: 12 and 36
  5. 5. Statistics

    Find the mean of: 17, 4, 11, 20

    Answer: 13

Thursday 12 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 4x + 3 = 39

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 14.21cm
  4. 4. Ratio

    Share 105 in the ratio 4:3

    Answer: 60 and 45
  5. 5. Statistics

    Find the mean of: 4, 18, 12, 6, 14

    Answer: 10.8

Friday 13 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄11 + 1⁄11

    Answer: 2⁄11
  2. 2. Algebra

    Solve: 5x - 12 = 18

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics

    Calculate the mean of: 33, 5, 26, 15, 7, 11, 16, 44

    Answer: 19.6