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Lintel Mar 22 - 28 25 questions
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Monday 22 March 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    54000

    Answer: 5.4 × 104
  2. 2. Algebra

    Factorise: x² - 7x + 10

    Answer: (x - 2)(x - 5)
  3. 3. Geometry

    Adjacent = 22cm, angle = 41°. Find opposite

    Answer: 19.cm
  4. 4. Ratio

    In ratio 3:2:3, what fraction is the second part?

    Answer: 28
  5. 5. Statistics

    The mean of 6 numbers is 35. If 5 of them are 36, 42, 35, 20, 27, what is the missing number?

    Answer: 50

Tuesday 23 March 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.029

    Answer: 2.9 × 10-2
  2. 2. Algebra

    Factorise: x² + 4x - 12

    Answer: (x + 6)(x - 2)
  3. 3. Geometry

    Hypotenuse = 28cm, angle = 50°. Find adjacent side

    Answer: 18cm
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 24, 14, 38, 36, 9, 18, 20, 32

    Answer: 23.9

Wednesday 24 March 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.003

    Answer: 3 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 2

    Answer: (x + 2)(x - 1)
  3. 3. Geometry

    Hypotenuse = 31cm, angle = 55°. Find adjacent side

    Answer: 17.8cm
  4. 4. Ratio

    Simplify: 6:12:12

    Answer: 1:2:2
  5. 5. Statistics

    The mean of 5 numbers is 40. If 4 of them are 15, 34, 33, 22, what is the missing number?

    Answer: 96

Thursday 25 March 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    22000000

    Answer: 2.2 × 107
  2. 2. Algebra

    Factorise: x² - 9x + 20

    Answer: (x - 5)(x - 4)
  3. 3. Geometry

    Adjacent = 23cm, angle = 53°. Find opposite

    Answer: 30.5cm
  4. 4. Ratio

    Divide 110 in the ratio 1:2:2

    Answer: 22, 44 and 44
  5. 5. Statistics

    Calculate the mean of: 25, 13, 24, 21, 22, 23

    Answer: 21.3

Friday 26 March 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00018

    Answer: 1.8 × 10-4
  2. 2. Algebra

    Factorise: x² - 6x + 8

    Answer: (x - 4)(x - 2)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 63°. Find adjacent side

    Answer: 13.2cm
  4. 4. Ratio

    Divide 112 in the ratio 1:2:1

    Answer: 28, 56 and 28
  5. 5. Statistics

    Calculate the mean of: 9, 35, 18, 19, 21, 20

    Answer: 20.3