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Lintel Jan 1 - 7 25 questions
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Monday 12 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 73 + ? = 108

    Answer: 35
  2. 2. Algebra

    Factorise: 4x² + 3x

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

    Opposite = 13cm, adjacent = 9cm. Calculate the angle

    Answer: 55.3°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: -6, -13, 34, 50, 16

    Answer: 63

Tuesday 13 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 93. What are the numbers?

    Answer: 30, 31, and 32
  2. 2. Algebra

    Solve: x⁄8 = 1.875

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 60cm²
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 7⁄13

Wednesday 14 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 997 + 821

    Answer: 1818
  2. 2. Algebra

    Solve: x⁄7 = 3.8571428571429

    Answer: x = 27
  3. 3. Geometry

    Adjacent = 18cm, hypotenuse = 37cm. Find the angle

    Answer: 60.9°
  4. 4. Ratio

    Find 69% of 460

    Answer: 317.4
  5. 5. Statistics

    Find the range of: -13, 23, 47, -3, 23

    Answer: 60

Thursday 15 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 629 + 792

    Answer: 629 + 792 = 1421
  2. 2. Algebra

    For y = x³ + 15, calculate y when x = 3

    Answer: y = 42
  3. 3. Geometry

    Opposite = 20cm, adjacent = 17cm. Calculate the angle

    Answer: 49.6°
  4. 4. Ratio

    Find 60% of 381

    Answer: 228.6
  5. 5. Statistics

    A bag has 7 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 7⁄15

Friday 16 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 93. What are the numbers?

    Answer: 30, 31, and 32
  2. 2. Algebra

    Solve: 9x = 54

    Answer: x = 6
  3. 3. Geometry

    Find the distance between (-3, -1) and (11, 6)

    Answer: 15.65
  4. 4. Ratio

    Find 74% of 407

    Answer: 301.18
  5. 5. Statistics

    A bag has 4 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 1⁄3