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Cornerstone Apr 15 - 21 25 questions
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Monday 15 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄8 + 3⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 8x - 14 = 42

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 45 in the ratio 1:2

    Answer: 15 and 30
  5. 5. Statistics

    Find the mean of: 10, 6, 11

    Answer: 9

Tuesday 16 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄7

    Answer: 16⁄21
  2. 2. Algebra

    Solve: 8x - 6 = 50

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 14cm

    Answer: 17.2cm
  4. 4. Ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics

    Find the mean of: 15, 2, 2, 10

    Answer: 7.25

Wednesday 17 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 5x + 8 = 38

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 120 in the ratio 2:1

    Answer: 80 and 40
  5. 5. Statistics

    Calculate the mean of: 30, 36, 27, 48, 9, 10, 29, 31

    Answer: 27.5

Thursday 18 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄9 + 5⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 6x + 14 = 32

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 85 in the ratio 1:4

    Answer: 17 and 68
  5. 5. Statistics

    Calculate the mean of: 36, 14, 6, 44, 35, 40

    Answer: 29.2

Friday 19 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 6⁄8

    Answer: 27⁄20
  2. 2. Algebra

    Solve: 6x - 11 = 31

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio

    Share 56 in the ratio 3:4

    Answer: 24 and 32
  5. 5. Statistics

    Find the mean of: 12, 3, 19

    Answer: 11.333333333333