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Cornerstone Mar 30 - Apr 5 25 questions
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Monday 30 March 2026

Keystones #89 · Five questions · Open this day only

  1. 1. Number

    Divide: 5⁄8 ÷ 2⁄3

    Answer: 15⁄16
  2. 2. Algebra

    Solve: 6x + 11 < 34

    Answer: x < 3.8
  3. 3. Geometry

    Find the area of a right triangle with base 11cm and height 6cm

    Answer: 33cm²
  4. 4. Ratio

    If 7 items cost £70.00, how much do 8 items cost?

    Answer: £80.00
  5. 5. Statistics

    What are the modes of: 17, 18, 35, 35, 30, 18

    Answer: 18 and 35

Tuesday 31 March 2026

Keystones #90 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄3 ÷ 6

    Answer: 1⁄6
  2. 2. Algebra

    Solve: 3x - 9 > 29

    Answer: x > 12.7
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 6cm and 15cm

    Answer: 45cm²
  4. 4. Ratio

    If 7 items cost £21.00, how much do 13 items cost?

    Answer: £39.00
  5. 5. Statistics

    Find the mode of: 14, 5, 5, 5, 6, 15

    Answer: 5

Wednesday 1 April 2026

Keystones #91 · Five questions · Open this day only

  1. 1. Number

    Divide: 3⁄6 ÷ 4⁄4

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 6x - 11 > 22

    Answer: x > 5.5
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 11cm and 12cm

    Answer: 66cm²
  4. 4. Ratio

    7 kg costs £21.20. What is the cost of 25 kg?

    Answer: £75.71
  5. 5. Statistics

    Find the mode of: 14, 14, 10, 11, 14, 9

    Answer: 14

Thursday 2 April 2026

Keystones #92 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄4 ÷ 2

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 5x - 12 > 22

    Answer: x > 6.8
  3. 3. Geometry

    Find the area of a right triangle with base 6cm and height 8cm

    Answer: 24cm²
  4. 4. Ratio

    4 kg costs £16.50. What is the cost of 16 kg?

    Answer: £66.00
  5. 5. Statistics

    Find the mode of: 11, 7, 11, 11, 7, 11

    Answer: 11

Friday 3 April 2026

Keystones #93 · Five questions · Open this day only

  1. 1. Number

    Divide: 2⁄7 ÷ 1⁄6

    Answer: 12⁄7
  2. 2. Algebra

    Solve: 6x + 5 < 46

    Answer: x < 6.8
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 14cm and 6cm

    Answer: 42cm²
  4. 4. Ratio

    9 kg costs £47.40. What is the cost of 12 kg?

    Answer: £63.20
  5. 5. Statistics

    What are the modes of: 36, 12, 12, 27, 23, 36

    Answer: 12 and 36