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Lintel Jun 20 - 26 25 questions
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Monday 20 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    480000

    Answer: 4.8 × 105
  2. 2. Algebra

    Factorise: x² + 4x - 12

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

    Adjacent = 23cm, angle = 41°. Find opposite

    Answer: 20cm
  4. 4. Ratio

    Divide 225 in the ratio 2:4:3

    Answer: 50, 100 and 75
  5. 5. Statistics

    Calculate the mean of: 17, 48, 32, 20, 8, 22, 45, 35

    Answer: 28.4

Tuesday 21 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.058

    Answer: 5.8 × 10-2
  2. 2. Algebra

    Factorise: x² - 7x + 10

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

    Hypotenuse = 38cm, angle = 49°. Find adjacent side

    Answer: 24.9cm
  4. 4. Ratio

    Simplify: 16:8:16

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

    The mean of 5 numbers is 39. If 4 of them are 45, 49, 31, 46, what is the missing number?

    Answer: 24

Wednesday 22 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    9800000

    Answer: 9.8 × 106
  2. 2. Algebra

    Factorise: x² - 8x + 15

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

    Adjacent = 17cm, angle = 49°. Find opposite

    Answer: 19.6cm
  4. 4. Ratio

    Divide 176 in the ratio 4:3:1

    Answer: 88, 66 and 22
  5. 5. Statistics

    The mean of 4 numbers is 38. If 3 of them are 31, 42, 42, what is the missing number?

    Answer: 37

Thursday 23 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00081

    Answer: 8.1 × 10-4
  2. 2. Algebra

    Factorise: x² + 4x - 32

    Answer: (x + 8)(x - 4)
  3. 3. Geometry

    Hypotenuse = 17cm, angle = 34°. Find adjacent side

    Answer: 14.cm
  4. 4. Ratio

    Simplify: 24:16:12

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

    Calculate the mean of: 28, 45, 19, 46, 35, 40, 18, 7

    Answer: 29.8

Friday 24 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.018

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

    Factorise: x² + x - 2

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

    Hypotenuse = 23cm, angle = 38°. Find adjacent side

    Answer: 18.cm
  4. 4. Ratio

    In ratio 4:1:3, what fraction is the second part?

    Answer: 18
  5. 5. Statistics

    The mean of 4 numbers is 27. If 3 of them are 39, 43, 18, what is the missing number?

    Answer: 8