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Capstone Oct 12 - 18 25 questions
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Monday 12 October 2026

Keystones #285 · Five questions · Open this day only

  1. 1. Number

    Multiply: 2.9 × 107 × 4.1 × 106

    Answer: 1.19 × 1014
  2. 2. Algebra

    Solve: 4x + 5 ≤ 2x - 7

    Answer: x ≤ 6
  3. 3. Geometry

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

    Answer: 42cm²
  4. 4. Ratio

    In ratio 8:3, the difference between shares is 105. What is the total?

    Answer: 231
  5. 5. Statistics

    Find the mode of: 26, 13, 70, 41, 65

    Answer: No mode

Tuesday 13 October 2026

Keystones #286 · Five questions · Open this day only

  1. 1. Number

    Multiply: 2.8 × 107 × 8.2 × 106

    Answer: 2.3 × 1014
  2. 2. Algebra

    Solve: 7x + 9 ≤ 5x - 7

    Answer: x ≤ 8
  3. 3. Geometry

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

    Answer: 45cm²
  4. 4. Ratio

    In ratio 2:1, the difference between shares is 108. What is the total?

    Answer: 324
  5. 5. Statistics

    Find the mode of: 14, 32, 41, 75, 56

    Answer: No mode

Wednesday 14 October 2026

Keystones #287 · Five questions · Open this day only

  1. 1. Number

    Multiply: 3.2 × 105 × 8 × 103

    Answer: 2.56 × 109
  2. 2. Algebra

    Solve: 8x + 7 ≤ x - 5

    Answer: x ≤ 1.7
  3. 3. Geometry

    A right triangle has hypotenuse 10cm and one side 6cm. Find its area

    Answer: 24cm²
  4. 4. Ratio

    In ratio 2:1, the difference between shares is 144. What is the total?

    Answer: 432
  5. 5. Statistics

    Find the mode of: 30, 49, 72, 61, 12

    Answer: No mode

Thursday 15 October 2026

Keystones #288 · Five questions · Open this day only

  1. 1. Number

    Multiply: 4.3 × 105 × 3 × 104

    Answer: 1.29 × 1010
  2. 2. Algebra

    Solve: 8x + 4 ≤ x - 2

    Answer: x ≤ 0.9
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 8cm and 11cm

    Answer: 44cm²
  4. 4. Ratio

    In ratio 7:2, the difference between shares is 210. What is the total?

    Answer: 378
  5. 5. Statistics

    Find the mode of: 33, 17, 73, 41, 56

    Answer: No mode

Friday 16 October 2026

Keystones #289 · Five questions · Open this day only

  1. 1. Number

    Multiply: 6.1 × 106 × 2.3 × 106

    Answer: 1.4 × 1013
  2. 2. Algebra

    Solve: 5x + 5 ≤ 2x - 3

    Answer: x ≤ 2.7
  3. 3. Geometry

    A right triangle has hypotenuse 17cm and one side 8cm. Find its area

    Answer: 60cm²
  4. 4. Ratio

    In ratio 9:7, the difference between shares is 68. What is the total?

    Answer: 544
  5. 5. Statistics

    Find the mode of: 55, 78, 46, 25, 17

    Answer: No mode