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Lintel Jan 1 - 7 25 questions
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Monday 29 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 996 + 853

    Answer: 1849
  2. 2. Algebra

    Solve: x6 = 1

    Answer: x = 6
  3. 3. Geometry

    Calculate the area of a circle with diameter 22cm

    Answer: 380.13cm²
  4. 4. Ratio

    Simplify: 18:9:12

    Answer: 6:3:4
  5. 5. Statistics

    A bag has 8 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 813

Tuesday 30 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 997 + 506

    Answer: 1503
  2. 2. Algebra

    Solve: x3 = 11

    Answer: x = 33
  3. 3. Geometry

    Adjacent = 30cm, hypotenuse = 40cm. Find the angle

    Answer: 41.4°
  4. 4. Ratio

    Find 78% of 172

    Answer: 134.16
  5. 5. Statistics

    A bag has 8 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 813

Wednesday 1 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 968 + 333

    Answer: 968 + 333 = 1301
  2. 2. Algebra

    Solve: x4 = 5

    Answer: x = 20
  3. 3. Geometry

    Adjacent = 25cm, hypotenuse = 37cm. Find the angle

    Answer: 47.5°
  4. 4. Ratio

    Simplify: 20:20:24

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

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

    Answer: 613

Thursday 2 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 997 + 883

    Answer: 1880
  2. 2. Algebra

    Solve: x4 = 2.5

    Answer: x = 10
  3. 3. Geometry

    Calculate the perimeter of a right triangle with sides 7cm and 11cm

    Answer: 31cm
  4. 4. Ratio

    Find 41% of 477

    Answer: 195.57
  5. 5. Statistics

    A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 311

Friday 3 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 44 + ? = 168

    Answer: 124
  2. 2. Algebra

    Solve: 6x - 7 = 2x + 17

    Answer: x = 6
  3. 3. Geometry

    A circle has area 254.5cm². Find its radius (dp)

    Answer: 9cm
  4. 4. Ratio

    Find 22% of 277

    Answer: 60.94
  5. 5. Statistics

    Find the range of: 35, -22, -26, 35, -19

    Answer: 61