GCSE Secondary Maths Age 13-17 - Number: Decimal Multiplication - Explained

The video tutorial explains the traditional method of long multiplication using the example of 546 multiplied by 43. It details the step-by-step process of multiplying by individual digits, adding the results, and determining the correct placement of the decimal point. The tutorial also discusses the allocation of marks for the question, emphasizing the importance of obtaining the correct digits and using a valid method.

What is the first step in the traditional method of long multiplication?

• Subtracting the numbers

• Dividing the numbers

• Multiplying each digit separately

• Adding the numbers

When multiplying by tens, what should be added to the result?

• A two

• A one

• A decimal point

• A zero

What is the final product of 546 multiplied by 43?

• 22,478

• 24,378

• 23,478

• 23,748

How many digits should be considered after the decimal point in the final answer?

• One

• Two

• Three

• None

What is one method to verify the placement of the decimal point?

• Guessing

• Estimating with rounded numbers

• Checking with a ruler

• Using a calculator