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Lintel Jan 1 - 7 25 questions
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Monday 25 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 8√4 - 3√4

    Answer: 5√4
  2. 2. Algebra

    Solve: 2x = 12

    Answer: x = 6
  3. 3. Geometry

    Find c if a = 16cm and b = 24cm in a right triangle

    Answer: 28.8cm
  4. 4. Ratio

    Calculate 30.7% of 469

    Answer: 143.98
  5. 5. Statistics

    Calculate the mean of: 10, 30, 17, 36, 42, 29, 31, 24

    Answer: 27.4

Tuesday 26 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 141. What are the numbers?

    Answer: 46, 47, and 48
  2. 2. Algebra

    Factorise: 8x² + 6x

    Answer: 2x(4x + 3)
  3. 3. Geometry

    Opposite = 17cm, adjacent = 12cm. Calculate the angle

    Answer: 54.8°
  4. 4. Ratio

    Calculate 40.9% of 665

    Answer: 271.99
  5. 5. Statistics

    Calculate the mean of: 27, 21, 23, 46, 25, 38, 29, 23

    Answer: 29

Wednesday 27 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 439 + 966

    Answer: 439 + 966 = 1405
  2. 2. Algebra

    Solve: x8 = 3.25

    Answer: x = 26
  3. 3. Geometry

    Adjacent = 29cm, hypotenuse = 39cm. Find the angle

    Answer: 42°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 3 red, 5 blue and 3 green sections. Probability of landing on red?

    Answer: 311

Thursday 28 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 951 + 890

    Answer: 951 + 890 = 1841
  2. 2. Algebra

    Solve: x3 = 3.3333333333333

    Answer: x = 10
  3. 3. Geometry

    Adjacent = 29cm, hypotenuse = 44cm. Find the angle

    Answer: 48.8°
  4. 4. Ratio

    Calculate 42.4% of 355

    Answer: 150.52
  5. 5. Statistics

    Find the range of: -25, 27, 26, 44, -13

    Answer: 69

Friday 29 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: (-17) + (-29) + (-19)

    Answer: -65
  2. 2. Algebra

    Solve: 2x = 20

    Answer: x = 10
  3. 3. Geometry

    Opposite = 18cm, adjacent = 9cm. Calculate the angle

    Answer: 63.4°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 6 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 613