Change pack
Cornerstone Oct 19 - 25 25 questions
PDF (questions) PDF (answers)

Monday 19 October 2026

Keystones #292 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 6x - 12 = 36

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics

    Calculate the mean of: 31, 25, 43, 45, 21, 5, 13, 23

    Answer: 25.8

Tuesday 20 October 2026

Keystones #293 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 1⁄7

    Answer: 13⁄42
  2. 2. Algebra

    Solve: 5x - 10 = 40

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 13cm

    Answer: 16.4cm
  4. 4. Ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics

    Find the mean of: 9, 15, 7, 3, 4

    Answer: 7.6

Wednesday 21 October 2026

Keystones #294 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 3x + 3 = 36

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics

    Calculate the mean of: 22, 34, 14, 31, 9, 50, 9, 14

    Answer: 22.9

Thursday 22 October 2026

Keystones #295 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄4

    Answer: 13⁄14
  2. 2. Algebra

    Solve: 3x + 13 = 46

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio

    Share 48 in the ratio 3:1

    Answer: 36 and 12
  5. 5. Statistics

    Calculate the mean of: 26, 15, 29, 9, 6, 17, 40

    Answer: 20.3

Friday 23 October 2026

Keystones #296 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x - 6 = 64

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 5.83cm
  4. 4. Ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics

    Find the mean of: 7, 18, 19

    Answer: 14.666666666667