The video tutorial explains how to calculate a 30% reduction on a £15 t-shirt. It breaks down the process into three steps: calculating 10% of the original price, multiplying to find 30%, and subtracting to determine the reduced price. The tutorial emphasizes the importance of aligning decimal points and using formal methods to ensure accuracy, concluding with the final reduced price of £10.50.

What is the first step in calculating the reduced price of the t-shirt?

• Add 10% to the original price

• Subtract 30% from the original price

• Divide the original price by 10

• Multiply the original price by 0.3

How do you calculate 30% of the original price?

• Subtract 10% of the price from the original

• Multiply 10% of the price by 3

• Divide 10% of the price by 3

• Add 10% of the price three times

What is the value of 30% of the original price?

• £3.00

• £1.50

• £4.50

• £5.00

What operation is performed to find the reduced price after calculating 30%?

• Subtract 30% from the original price

• Divide the original price by 0.7

• Add 30% to the original price

• Multiply the original price by 0.7

What is the final reduced price of the t-shirt?

• £10.50

• £11.50

• £12.00

• £9.00