Expressions and Cost Calculations

The video tutorial introduces algebraic expressions through practical examples. It covers calculating costs of items like oranges, sweets, T-shirts, and kicks using algebra. It also explains how to determine ages and total costs using algebraic expressions. The tutorial emphasizes the use of variables and basic operations like addition, subtraction, and multiplication to form expressions.

If an orange costs 40p, what is the expression for the cost of X oranges?

• X/40

• 40-X

• 40 + X

• 40X

How much would 5 oranges cost if each costs 40p?

• 150p

• 200p

• 220p

• 180p

What is the expression for the total number of marbles if George has Y marbles, Jack has 20, and Esme has 35?

• Y + 75

• Y + 35

• Y + 20

• Y + 55

If George has 10 marbles, how many marbles do they have in total?

• 55

• 65

• 45

• 75

What is the expression for the cost of X small sweets if each costs 3p?

• 3 + X

• X + 3

• 3X

• X/3

If you buy 4 small sweets and 2 large sweets, what is the total cost if small sweets cost 3p and large sweets cost 10p?

• 38p

• 36p

• 34p

• 32p

What is the expression for the total cost of Y large sweets if each costs 10p?

• Y/10

• 10 + Y

• Y + 10

• 10Y

What is the expression for the cost of Y teas at 90p each?

• Y/90

• Y + 90

• 90Y

• 90 + Y

If you buy 3 teas and 3 cakes, what is the total cost if teas cost 90p and cakes cost 50p?

• 450p

• 510p

• 420p

• 480p

What is the expression for Hannah's age if Rosie is X years old and Hannah is 4 years older?

• X - 4

• X/4

• X + 4

• 4X