KS2 Primary Maths Age 9-13 - Cubes - Problem: - Explained

The video tutorial explains how to calculate the surface area of a large cube formed by joining eight small cubes, each with a surface area of 30 cm². The process involves understanding the distribution of surface area across the cube's six faces and performing calculations to find the total surface area of the large cube. The tutorial also highlights key steps and marks awarded for solving the problem.

How many small cubes does Joe have initially?

• Six

• Ten

• Eight

• Four

What is the surface area of one face of a small cube?

• 10 cm²

• 5 cm²

• 15 cm²

• 20 cm²

How many faces does a cube have?

• Five

• Four

• Seven

• Six

What is the surface area of one face of the large cube?

• 15 cm²

• 30 cm²

• 20 cm²

• 25 cm²

What is the total surface area of the large cube?

• 130 cm²

• 120 cm²

• 110 cm²

• 100 cm²