MathsFreePrintable

Percentages Mental Strategies

A free maths worksheet ready for your classroom. Open in Kuraplan to grab the print-ready PDF, customize it for your students, or generate a fresh version in seconds.

Download now

Name:Date:

Percentages Mental Strategies

Use mental strategies where you can. Show working for the shopping and challenge problems. Write money answers in dollars.

Quick percentage strategies

1.Work out 10% of 70.

2.Work out 10% of 36.

3.Work out 10% of 125.

4.Work out 10% of 240.

5.Work out 5% of 80.

6.Work out 5% of 140.

7.Work out 5% of 60.

8.Work out 5% of 200.

9.Which operation finds 10% of a number?

Multiply the number by 10
Divide the number by 10
Add 10 to the number
Subtract 10 from the number

Discounts and sale prices

10.A rain jacket costs $150. It is reduced by 10%. Find the discount and the sale price.

11.A board game costs $180 and has a 5% discount. Find the discount and the sale price.

12.A scooter costs $350. Its price is reduced by 10%. How much does it cost after the discount?

13.Cooper is buying a desk for $240 with a 5% discount. How much will she save, and what is the discounted price?

14.Which offer gives the larger discount amount: 10% off a $160 lamp or 5% off a $300 table?

10% off the lamp
5% off the table
Both discounts are equal

Decimals and reverse percentages

15.Find 10% of 68.4.

16.Find 5% of 154.6.

17.Find 10% of 329.5.

18.Find 5% of 82.8.

19.Ten per cent of a number is 42. What is the number?

20.Five per cent of a number is 18. What is the number?

21.A tablet is priced at $600. The shop takes 10% off, then takes a further 5% off the reduced price. What is the final price?

Percentages in everyday situations

22.A community has 12,000 residents. If its population increases by 5% in one year, how many additional residents is that?

23.Match each percentage to the mental strategy used to find it.

10% of a number
5% of a number
1% of a number

Divide by 100
Divide by 10
Find 10%, then halve the result

24.Select every situation where finding 10% or 5% could help with a calculation.

Working out a 10% sale reduction
Finding a 5% tip on a bill
Calculating the area of a rectangle
Finding a 10% increase in a quantity
Naming the next day of the week

25.A shop sells a water bottle for $45 and a lunch box for $75. A 10% discount applies to the combined price. How much will the two items cost altogether after the discount?