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Lintel Jan 1 - 7 25 questions
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Monday 13 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: x5 × x2

    Answer: x7
  2. 2. Algebra

    Solve: x7 = 5

    Answer: x = 35
  3. 3. Geometry

    Adjacent = 21cm, hypotenuse = 33cm. Find the angle

    Answer: 50.5°
  4. 4. Ratio

    Find 41% of 467

    Answer: 191.47
  5. 5. Statistics

    A bag has 7 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 711

Tuesday 14 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: -3 + (-15) + (-12)

    Answer: -30
  2. 2. Algebra

    Find the next term: 1, 4, 10, 19, ...

    Answer: 31
  3. 3. Geometry

    A circle has area 380.cm². Find its radius (dp)

    Answer: 11cm
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: -21, 48, 17, -6, 0

    Answer: 69

Wednesday 15 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: y2 × y4 × y4

    Answer: y10
  2. 2. Algebra

    Solve: 5x = 60

    Answer: x = 12
  3. 3. Geometry

    Opposite = 12cm, adjacent = 9cm. Calculate the angle

    Answer: 53.1°
  4. 4. Ratio

    Calculate 43.6% of 356

    Answer: 155.22
  5. 5. Statistics

    A bag has 7 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 710

Thursday 16 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 650 + 267

    Answer: 650 + 267 = 917
  2. 2. Algebra

    Factorise: 3x² + 9x

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

    Find the perimeter: hypotenuse = 23cm, one side = 18cm

    Answer: 55.3cm
  4. 4. Ratio

    Calculate 41.2% of 398

    Answer: 163.98
  5. 5. Statistics

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

    Answer: 12

Friday 17 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 105. What are the numbers?

    Answer: 34, 35, and 36
  2. 2. Algebra

    Solve: x6 = 1.1666666666667

    Answer: x = 7
  3. 3. Geometry

    Calculate the distance between (6, 10) and (9, 14)

    Answer: 5
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: 21, -11, 16, 16, -11

    Answer: 32