🧠 Part 1: Mental Strategies for 10%

Remember: To find 10% of a number, divide by 10 (or move the decimal point one place left).

a) 10% of 40 = _____

b) 10% of 80 = _____

c) 10% of 60 = _____

d) 10% of 90 = _____

🧮 Part 2: Mental Strategies for 5%

Remember: To find 5% of a number, find 10% first, then halve it.

a) 5% of 40: First find 10% = _____, then halve it = _____

b) 5% of 80: First find 10% = _____, then halve it = _____

c) 5% of 60: First find 10% = _____, then halve it = _____

🛍️ Part 3: Shopping Discounts

a) T-shirt costs $50. 10% discount.

Discount amount = $_____ Sale price = $_____

b) Shoes cost $80. 5% discount.

Discount amount = $_____ Sale price = $_____

c) Book costs $30. 10% discount.

Discount amount = $_____ Sale price = $_____

Show your working: ________________________________

🎯 Part 4: Quick Mental Maths

a) ____% of 50 = 5

b) ____% of 40 = 4

c) ____% of 20 = 1

Sarah has $75 to spend at the shops. She finds a jacket with a 10% discount. If the original price was $70, how much money will she have left after buying the jacket?

Answer: Sarah will have $_____ left.

🏆 Part 5: Challenge Questions

A restaurant bill comes to $85. You want to leave a 10% tip. How much tip should you leave, and what will be the total amount you pay?