math

• What is the ideal temperature for a freezer?

  • 12°C
• If the temperature in Bill's freezer increased by 15°C from -12°C, what was the new temperature?

  3°C
• How do you calculate the new temperature in Bill's freezer after a power cut?


  Add 15°C to the original temperature of -12°C
• What is the initial temperature in Ahad's new freezer?

  20°C
• How much does the temperature in Ahad's freezer drop per hour?


  2°C per hour
• How many hours did it take for Ahad's freezer to reach -12°C from 20°C if it drops 2°C per hour?


  16 hours
• What is the process to determine how long it takes for Ahad's freezer to reach the correct temperature?

  • Start at 20°C
  • Target temperature is -12°C
  • Total drop needed: 20°C - (-12°C) = 32°C
  • Rate of drop: 2°C per hour
  • Time taken: 32°C / 2°C per hour = 16 hours
• The number 1 is not considered a prime number because it only has one factor, which is 1 itself.
• What is the result of the calculation $14.7 +$$2.63 - 1.5$?


  15.83
• What is the result of the calculation $37.3 - 0.09$?


  37.21
• How do you find the total cost of 3 shirts costing £8.99 each?

  Multiply the cost of one shirt by 3
• What is the total cost of 3 shirts at £8.99 each?

  £26.97
• What are the answers to the calculations provided?

  • a: $17.33$
  • b: $37.21$
• What is the prime factorization of 600?

  2 × 2 × 2 × 3 × 5
• How do you express 30 as a product of its prime factors?

  2 × 3 × 5
• What is the result of the expression $\frac{-2x-2+6}{4+6}$?


  $\frac{-2x + 4}{10}$
• What is the result of the expression 6 + (-3 - 4)?

  • 1
• What is the sum of 3 + 10 + -2?


  11
• What is the result of the multiplication 42 × 46?


  1932
• What is the result of the expression (77)³?

  456533
• What is the perimeter of a rectangle with dimensions 20 cm and 2 m?

  440 cm
• How do you calculate the perimeter of a rectangle?

  • Perimeter = 2 × (length + width)
  • Ensure all dimensions are in the same units before calculating
• What is the value of 63 + 67?

  130
• What is the result of the expression 16 × 464 × 4?

  29952
• What is the result of the expression (42 + 102) + 22?

  166
• What is the value of 8192?

  8192
• What is the value of 34 × 14?

  476
• What is the value of 16?


  16
• What are the dimensions of the rectangle mentioned in the study material?

  20 cm and 2 m
• How do you convert the length of the rectangle from meters to centimeters?

  Multiply the length in meters by 100
• If the length of the rectangle is 2 m, what is its length in centimeters?

  200 cm
• What is the formula to calculate the perimeter of a rectangle?

  Perimeter = 2(length + width)
• What is the perimeter of a rectangle with a length of 200 cm and a width of 20 cm?

  440 cm
• What is the result of the equation 2 + 2?


  4
• What are the dimensions of the rectangle mentioned in the study material?

  5 cm long and 4 mm wide
• How do you calculate the area of a rectangle?

  Area = length × width
• What is the area of a rectangle that is 5 cm long and 4 mm wide, expressed in mm²?

  Area = $50 \text{ mm}^2$
• What is the formula to convert cm to mm?

  1 cm = 10 mm
• Why is it necessary to convert the length of the rectangle from cm to mm for area calculation?

  To ensure both dimensions are in the same unit for accurate area calculation
• If the length of the rectangle is given in cm and the width in mm, what must be done before calculating the area?

  Convert the length from cm to mm