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Cornerstone Aug 17 - 23 25 questions
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Monday 17 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 14 + 36

    Answer: 34
  2. 2. Algebra

    Solve: 6x + 12 = 84

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 98 in the ratio 4:3

    Answer: 56 and 42
  5. 5. Statistics

    Calculate the mean of: 11, 6, 7, 34, 25, 41, 16

    Answer: 20

Tuesday 18 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 46 + 24

    Answer: 76
  2. 2. Algebra

    Solve: 7x + 15 = 64

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 40 in the ratio 1:3

    Answer: 10 and 30
  5. 5. Statistics

    Calculate the mean of: 46, 14, 36, 49, 30, 10, 45

    Answer: 32.9

Wednesday 19 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 25 + 25

    Answer: 45
  2. 2. Algebra

    Solve: 6x - 9 = 63

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 13cm

    Answer: 13.93cm
  4. 4. Ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics

    Find the mean of: 14, 13, 8, 8, 12

    Answer: 11

Thursday 20 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 15 + 34

    Answer: 1920
  2. 2. Algebra

    Solve: 4x - 11 = 25

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Share 42 in the ratio 3:4

    Answer: 18 and 24
  5. 5. Statistics

    Calculate the mean of: 21, 47, 31, 7, 41, 25, 45, 25

    Answer: 30.3

Friday 21 August 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 510 + 110

    Answer: 35
  2. 2. Algebra

    Solve: 5x + 14 = 59

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 7cm

    Answer: 9.22cm
  4. 4. Ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics

    Find the mean of: 18, 16, 6

    Answer: 13.333333333333