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Lintel Jan 1 - 7 25 questions
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Monday 2 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 1⁄4

    Answer: 3⁄8
  2. 2. Algebra

    Factorise fully: 25x² + 30x

    Answer: 5x(5x + 6)
  3. 3. Geometry

    Calculate the area of a circle with diameter 13cm

    Answer: 132.73cm²
  4. 4. Ratio

    Simplify: 4:6:4

    Answer: 2:3:2
  5. 5. Statistics

    Find the range of: -1, 38, 35, -10, 22

    Answer: 48

Tuesday 3 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 3⁄4 + 2⁄5

    Answer: 27⁄20
  2. 2. Algebra

    Factorise: 9x² + 7x

    Answer: x(9x + 7)
  3. 3. Geometry

    Adjacent = 20cm, hypotenuse = 39cm. Find the angle

    Answer: 59.1°
  4. 4. Ratio

    Simplify: 15:18:18

    Answer: 5:6:6
  5. 5. Statistics

    A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 5⁄11

Wednesday 4 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 114. What are the numbers?

    Answer: 37, 38, and 39
  2. 2. Algebra

    Solve: 5x = 70

    Answer: x = 14
  3. 3. Geometry

    Adjacent = 18cm, hypotenuse = 24cm. Find the angle

    Answer: 41.4°
  4. 4. Ratio

    Calculate 23.8% of 418

    Answer: 99.48
  5. 5. Statistics

    Find the range of: -25, 1, -23, 23, 28

    Answer: 53

Thursday 5 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 128 + 151

    Answer: 128 + 151 = 279
  2. 2. Algebra

    Factorise fully: 14x² + 8x

    Answer: 2x(7x + 4)
  3. 3. Geometry

    Opposite = 18cm, adjacent = 20cm. Calculate the angle

    Answer: 42°
  4. 4. Ratio

    Calculate 48.2% of 436

    Answer: 210.15
  5. 5. Statistics

    A bag has 6 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 3⁄5

Friday 6 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 117. What are the numbers?

    Answer: 38, 39, and 40
  2. 2. Algebra

    Solve: x⁄3 = 5.6666666666667

    Answer: x = 17
  3. 3. Geometry

    Find perimeter: adjacent = 11cm, angle = 38°

    Answer: 33.6cm
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 1⁄2