KS2 Primary Maths Age 13-17 - Calculations: Written Multiplication - Explained

The video tutorial explains the importance of showing the correct method in mathematical calculations to earn marks for both method and accuracy. It demonstrates a step-by-step multiplication of 71 by 46, emphasizing the need to align numbers correctly and the significance of including a zero when multiplying by tens. The tutorial concludes by highlighting that even if a mistake is made in addition, using the correct method can still earn method marks.

Why is it important to show your method in mathematical calculations?

• It is required by all exam boards.

• It makes the calculation faster.

• It helps in getting partial marks even if the final answer is wrong.

• It is a way to impress the examiner.

What is the first step in multiplying 71 by 46?

• Subtract 46 from 71.

• Add 71 and 46.

• Multiply 71 by 40.

• Multiply 71 by 6.

Why is it important to place numbers in the correct columns during multiplication?

• To make the calculation look neat.

• To ensure the correct addition of partial products.

• To avoid using a calculator.

• To save time.

What is the significance of the zero in the multiplication process of 71 by 46?

• It is a placeholder for the tens digit.

• It is not necessary and can be omitted.

• It is used to indicate the end of the calculation.

• It is used to separate the two numbers.

What happens if you make a mistake in addition but use the correct method?

• You get full marks.

• You still earn method marks.

• You lose all marks.

• You have to redo the calculation.