Change pack
Cornerstone Oct 11 - 17 25 questions
PDF (questions) PDF (answers)

Monday 11 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 2⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 6x + 12 = 72

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 99 in the ratio 4:1:4

    Answer: 44, 11 and 44
  5. 5. Statistics

    Find the mean of: 9, 9, 18

    Answer: 12

Tuesday 12 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 1⁄5

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 4x + 15 = 63

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 8cm

    Answer: 14.42cm
  4. 4. Ratio

    Divide 216 in the ratio 3:1:4

    Answer: 81, 27 and 108
  5. 5. Statistics

    Find the mean of: 6, 3, 5

    Answer: 4.6666666666667

Wednesday 13 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄8 + 1⁄8

    Answer: 3⁄8
  2. 2. Algebra

    Solve: 5x - 20 = 50

    Answer: x = 14
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Divide 52 in the ratio 1:1:2

    Answer: 13, 13 and 26
  5. 5. Statistics

    Calculate the mean of: 11, 30, 37, 22, 30, 25, 14, 41

    Answer: 26.3

Thursday 14 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 3x - 7 = 17

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 78 in the ratio 1:2

    Answer: 26 and 52
  5. 5. Statistics

    Find the mean of: 4, 5, 14, 4

    Answer: 6.75

Friday 15 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄8 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 5x + 8 = 33

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio

    Divide 162 in the ratio 1:4:4

    Answer: 18, 72 and 72
  5. 5. Statistics

    Calculate the mean of: 17, 41, 13, 35, 43, 45, 25

    Answer: 31.3