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Lintel Jan 1 - 7 25 questions
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Monday 26 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 25 + 45 + 12

    Answer: 1710
  2. 2. Algebra

    Solve: 3x = 18

    Answer: x = 6
  3. 3. Geometry

    Opposite = 12cm, adjacent = 15cm. Calculate the angle

    Answer: 38.7°
  4. 4. Ratio

    Calculate 17.9% of 645

    Answer: 115.46
  5. 5. Statistics

    Calculate the mean of: 50, 21, 17, 10, 36, 22

    Answer: 26

Tuesday 27 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 899 + 928

    Answer: 899 + 928 = 1827
  2. 2. Algebra

    Solve: x2 = 16.5

    Answer: x = 33
  3. 3. Geometry

    Adjacent = 14cm, hypotenuse = 21cm. Find the angle

    Answer: 48.2°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 5 red, 3 blue and 4 green sections. Probability of landing on red?

    Answer: 512

Wednesday 28 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 85 + ? = 131

    Answer: 46
  2. 2. Algebra

    Factorise fully: 9x² + 15x

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

    Find c if a = 20cm and b = 25cm in a right triangle

    Answer: 32cm
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: -19, 20, 7, -23, -17

    Answer: 43

Thursday 29 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 997 + 710

    Answer: 1707
  2. 2. Algebra

    Solve: 8x = 104

    Answer: x = 13
  3. 3. Geometry

    Opposite = 13cm, adjacent = 17cm. Calculate the angle

    Answer: 37.4°
  4. 4. Ratio

    Calculate 19.7% of 866

    Answer: 170.6
  5. 5. Statistics

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

    Answer: 23

Friday 30 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 994 + 589

    Answer: 1583
  2. 2. Algebra

    Solve: 3x = 39

    Answer: x = 13
  3. 3. Geometry

    Adjacent = 14cm, hypotenuse = 21cm. Find the angle

    Answer: 48.2°
  4. 4. Ratio

    Calculate 26% of 419

    Answer: 108.94
  5. 5. Statistics

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

    Answer: 513