GCSE Secondary Maths Age 13-17 - Number: Fractions - Explained

The video tutorial explains how to calculate the total mass of 25 sheets of A3 card. Each sheet has an area of 1/8 meter squared and a mass of 160 grams per meter squared. The tutorial walks through the arithmetic steps to find the mass of one sheet and then the total mass of 25 sheets, emphasizing the importance of units and the allocation of marks for the solution. The problem is straightforward, requiring basic arithmetic without a calculator.

What is the area of one A3 card sheet in meters squared?

• 1/8 meter squared

• 1 meter squared

• 1/4 meter squared

• 1/2 meter squared

If 1 meter squared of card has a mass of 160 grams, what is the mass of one A3 card sheet?

• 80 grams

• 40 grams

• 20 grams

• 10 grams

How do you calculate the total mass of 25 sheets of A3 card?

• Multiply 25 by 80

• Multiply 25 by 40

• Multiply 25 by 20

• Multiply 25 by 10

What is the total mass of 25 sheets of A3 card?

• 500 grams

• 400 grams

• 450 grams

• 550 grams

Why is it important to include units in your answer?

• Units are only needed in some questions

• Units are not important

• Units help in understanding the quantity

• Units make the answer look complete