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Cornerstone Jul 6 - 12 25 questions
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Monday 6 July 2026

Keystones #187 · Five questions · Open this day only

  1. 1. Number

    Divide: 2⁄4 ÷ 3⁄4

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x - 12 > 23

    Answer: x > 5
  3. 3. Geometry

    Find the area of a right triangle with base 10cm and height 6cm

    Answer: 30cm²
  4. 4. Ratio

    6 kg costs £33.10. What is the cost of 19 kg?

    Answer: £104.82
  5. 5. Statistics

    What are the modes of: 20, 35, 35, 20, 26, 25

    Answer: 20 and 35

Tuesday 7 July 2026

Keystones #188 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 ÷ 3

    Answer: 1⁄4
  2. 2. Algebra

    Solve: 2x + 11 < 34

    Answer: x < 11.5
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 8cm and 15cm

    Answer: 60cm²
  4. 4. Ratio

    7 kg costs £25.30. What is the cost of 22 kg?

    Answer: £79.51
  5. 5. Statistics

    Find the mode of: 12, 12, 12, 15, 11, 12

    Answer: 12

Wednesday 8 July 2026

Keystones #189 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄2 ÷ 4

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 5x + 7 < 28

    Answer: x < 4.2
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 9cm and 10cm

    Answer: 45cm²
  4. 4. Ratio

    5 kg costs £18.70. What is the cost of 20 kg?

    Answer: £74.80
  5. 5. Statistics

    Find the mode of: 9, 11, 6, 11, 11, 11

    Answer: 11

Thursday 9 July 2026

Keystones #190 · Five questions · Open this day only

  1. 1. Number

    Divide: 5⁄7 ÷ 1⁄6

    Answer: 30⁄7
  2. 2. Algebra

    Solve: 5x - 8 > 17

    Answer: x > 5
  3. 3. Geometry

    Find the area of a right triangle with base 9cm and height 8cm

    Answer: 36cm²
  4. 4. Ratio

    6 kg costs £31.60. What is the cost of 13 kg?

    Answer: £68.47
  5. 5. Statistics

    What are the modes of: 37, 16, 37, 11, 32, 11

    Answer: 11 and 37

Friday 10 July 2026

Keystones #191 · Five questions · Open this day only

  1. 1. Number

    Divide: 3⁄4 ÷ 2⁄3

    Answer: 9⁄8
  2. 2. Algebra

    Solve: 2x - 10 > 33

    Answer: x > 21.5
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 7cm and 14cm

    Answer: 49cm²
  4. 4. Ratio

    9 kg costs £24.00. What is the cost of 19 kg?

    Answer: £50.67
  5. 5. Statistics

    What are the modes of: 14, 30, 23, 30, 32, 14

    Answer: 14 and 30