MATHS - Algebra - Derive Expressions

This video tutorial teaches how to convert sentences into algebraic expressions to solve problems. It covers cost calculations using algebra, combining expressions for total costs, and age calculations. The video includes practice problems and encourages viewers to match phrases to expressions, enhancing their understanding of algebraic concepts.

How would you express the cost of buying x number of cups if each cup costs $2.20?

• $2.20 + x

• $2.20x

• $2.20 - x

• $2.20/x

If x represents the number of adult tickets and each ticket costs 12 pounds, how would you write the total cost?

• 12 - x

• x/12

• 12x

• 12 + x

What is the expression for the total cost of x adult tickets and y child tickets if adult tickets cost 12 pounds and child tickets cost 8 pounds?

• 12y + 8x

• 8x + 12y

• 12x - 8y

• 12x + 8y

How would you express David's age if he is 8 years older than Andrew, whose age is x?

• x + 8

• x - 8

• x/8

• 8x

If Jane's age is twice Andrew's age, represented by x, how would you write Jane's age?

• x/2

• x - 2

• 2x

• x + 2