Electricity Cost Calculation Methods

The video tutorial explains how to calculate an electricity bill by determining the number of units used and multiplying by the cost per unit. It demonstrates two methods for multiplication: a direct approach and the grid method, ensuring accuracy by verifying results through different calculations.

What is the first step in calculating an electricity bill?

• Convert the cost to pounds

• Identify the number of units used

• Determine the cost per unit

• Check the reasonableness of the bill

How much does each unit of electricity cost in this problem?

• 30p

• 25p

• 35p

• 40p

What is the total number of units used by J?

• 500

• 515

• 5115

• 513

Which method is used to multiply large numbers in this section?

• Grid method

• Long division

• Estimation

• Short multiplication

What is the result of multiplying 500 by 35?

• 1,750

• 17,500

• 15,000

• 1,500

How is the total cost converted from pence to pounds?

• By multiplying by 10

• By dividing by 100

• By dividing by 10

• By adding 100

What is the final cost in pounds after conversion?

• £100.25

• £180.25

• £10.25

• £18.25

Why is it important to verify the result using a different method?

• To confuse the students

• To ensure accuracy

• To practice more

• To make the process longer

What is the grid method used for in this context?

• To multiply numbers

• To add numbers

• To divide numbers

• To subtract numbers

What is the sum of 2,500, 300, 150, 50, and 25?

• 3,100

• 3,075

• 3,050

• 3,025