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Cornerstone Jun 15 - 21 25 questions
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Monday 15 June 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 16 + 26

    Answer: 12
  2. 2. Algebra

    Solve: 7x + 14 = 84

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 128 in the ratio 2:3:3

    Answer: 32, 48 and 48
  5. 5. Statistics

    Find the mean of: 9, 11, 16, 16, 13

    Answer: 13

Tuesday 16 June 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 24 + 35

    Answer: 1110
  2. 2. Algebra

    Solve: 6x + 12 = 78

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 15.56cm
  4. 4. Ratio

    Divide 154 in the ratio 4:3:4

    Answer: 56, 42 and 56
  5. 5. Statistics

    Find the mean of: 14, 19, 20, 6

    Answer: 14.75

Wednesday 17 June 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 16 + 16

    Answer: 13
  2. 2. Algebra

    Solve: 2x - 15 = 7

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 140 in the ratio 1:2:2

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

    Calculate the mean of: 22, 14, 28, 6, 23, 33, 22

    Answer: 21.1

Thursday 18 June 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 48 + 18

    Answer: 58
  2. 2. Algebra

    Solve: 2x - 8 = 2

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 70 in the ratio 3:1:3

    Answer: 30, 10 and 30
  5. 5. Statistics

    Calculate the mean of: 22, 22, 29, 41, 34, 47, 50, 12

    Answer: 32.1

Friday 19 June 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 24 + 25

    Answer: 910
  2. 2. Algebra

    Solve: 6x + 3 = 39

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 14.21cm
  4. 4. Ratio

    Divide 136 in the ratio 1:1:2

    Answer: 34, 34 and 68
  5. 5. Statistics

    Find the mean of: 14, 18, 11, 15

    Answer: 14.5