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Lintel Nov 2 - 8 25 questions
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Monday 2 November 2026

Keystones #306 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1.1 × 104 × 3.2 × 103

    Answer: 3.52 × 107
  2. 2. Algebra

    Solve: x² - 7x + 12 = 0

    Answer: x = -4 or x = -3
  3. 3. Geometry

    Adjacent = 22cm, hypotenuse = 38cm. Find the angle

    Answer: 54.6°
  4. 4. Ratio

    After a 25% decrease, a value is 90.75. What was the original?

    Answer: 121
  5. 5. Statistics

    Calculate the range of: 27, 22, 47, 49, 70, 21

    Answer: 49

Tuesday 3 November 2026

Keystones #307 · Five questions · Open this day only

  1. 1. Number

    Multiply: 6.5 × 106 × 9 × 104

    Answer: 5.85 × 1011
  2. 2. Algebra

    Solve: x² - 11x + 30 = 0

    Answer: x = -5 or x = -6
  3. 3. Geometry

    Opposite = 20cm, adjacent = 19cm. Calculate the angle

    Answer: 46.5°
  4. 4. Ratio

    After a 23% decrease, a value is 178.64. What was the original?

    Answer: 232
  5. 5. Statistics

    Find the range of: 39, -5, 40, -26, 48

    Answer: 74

Wednesday 4 November 2026

Keystones #308 · Five questions · Open this day only

  1. 1. Number

    Multiply: 4.1 × 105 × 6 × 105

    Answer: 2.46 × 1011
  2. 2. Algebra

    Solve: x² -x - 20 = 0

    Answer: x = 5 or x = -4
  3. 3. Geometry

    Opposite = 14cm, adjacent = 11cm. Calculate the angle

    Answer: 51.8°
  4. 4. Ratio

    A price of £875.96 includes a 22% increase. What was the price before the increase?

    Answer: £718.00
  5. 5. Statistics

    Calculate the range of: 112, 95, 35, 39, 61, 90

    Answer: 77

Thursday 5 November 2026

Keystones #309 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7.3 × 103 × 4.3 × 105

    Answer: 3.139 × 109
  2. 2. Algebra

    Solve: x² - 11x + 28 = 0

    Answer: x = -4 or x = -7
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 31cm. Find the angle

    Answer: 67.2°
  4. 4. Ratio

    A price of £810.00 includes a 35% increase. What was the price before the increase?

    Answer: £600.00
  5. 5. Statistics

    Find the range of: 36, -19, 9, 3, -18

    Answer: 55

Friday 6 November 2026

Keystones #310 · Five questions · Open this day only

  1. 1. Number

    Multiply: 7.9 × 104 × 3.3 × 104

    Answer: 2.61 × 109
  2. 2. Algebra

    Solve: x² - 8x + 12 = 0

    Answer: x = -6 or x = -2
  3. 3. Geometry

    Opposite = 15cm, adjacent = 12cm. Calculate the angle

    Answer: 51.3°
  4. 4. Ratio

    A price of £480.13 includes a 33% increase. What was the price before the increase?

    Answer: £361.00
  5. 5. Statistics

    Find the range of: 19, -16, 25, 16, -15

    Answer: 41