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Lintel Feb 3 - 9 25 questions
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Monday 3 February 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0023

    Answer: 2.3 × 10-3
  2. 2. Algebra

    Factorise: x² - 10x + 21

    Answer: (x - 7)(x - 3)
  3. 3. Geometry

    Hypotenuse = 20cm, angle = 53°. Find adjacent side

    Answer: 12cm
  4. 4. Ratio

    Simplify: 16:12:20

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

    The mean of 5 numbers is 21. If 4 of them are 21, 35, 22, 48, what is the missing number?

    Answer: -21

Tuesday 4 February 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.048

    Answer: 4.8 × 10-2
  2. 2. Algebra

    Factorise: x² - 9x + 18

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

    Hypotenuse = 19cm, angle = 39°. Find adjacent side

    Answer: 14.8cm
  4. 4. Ratio

    £168.00 is shared between A and B in the ratio 2:5. How much does A receive?

    Answer: £48.00
  5. 5. Statistics

    Calculate the mean of: 14, 28, 23, 32, 40, 29, 46, 12

    Answer: 28

Wednesday 5 February 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    9900000

    Answer: 9.9 × 106
  2. 2. Algebra

    Factorise: x² + x - 6

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

    Adjacent = 30cm, angle = 35°. Find opposite

    Answer: 21cm
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 40. If 4 of them are 25, 38, 44, 27, what is the missing number?

    Answer: 66

Thursday 6 February 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00071

    Answer: 7.1 × 10-4
  2. 2. Algebra

    Factorise: x² + x - 20

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

    Hypotenuse = 21cm, angle = 64°. Find adjacent side

    Answer: 9.2cm
  4. 4. Ratio

    In ratio 1:4:4, what fraction is the second part?

    Answer: 49
  5. 5. Statistics

    The mean of 5 numbers is 33. If 4 of them are 37, 49, 50, 21, what is the missing number?

    Answer: 8

Friday 7 February 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    58000000

    Answer: 5.8 × 107
  2. 2. Algebra

    Factorise: x² - 10x + 25

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

    Adjacent = 14cm, angle = 44°. Find opposite

    Answer: 13.5cm
  4. 4. Ratio

    In ratio 3:4:4, what fraction is the second part?

    Answer: 411
  5. 5. Statistics

    Calculate the mean of: 28, 27, 47, 20, 20, 13, 10, 50

    Answer: 26.9