Idea 9of 23Builds onSales tax is added at the till
13% is 10% plus 3%
How can you find 13% of a price in your head?
Today you'll discover
- how to find 10%
- how to find 1% and 3%
- how to add them to get 13%
Think firstA soccer ball for $20.00
What is 10% of $20.00?
Decide first, then press Next. Watch one piece of the bar get cut into ten.
A receipt for a $20.00 soccer ball beside a bar cut into ten equal pieces; one piece is shaded, 10% = $2.00. That piece is stretched into a second bar of ten smaller pieces, three shaded and marked 1%: 3% = $0.60. Under them: 13% = $2.00 + $0.60 = $2.60, and total = $22.60. The last step shows a $40.00 skateboard.
See the whole ideathe big idea and the key word, in one place
The big idea
To find 13%, find 10% and 3%, then add them.
13% of $20.00
Find 10%, then 1%, then 3%, then add 10% and 3%.
- 10%$2.00
- 1%$0.20
- 3%$0.60
- 13%$2.60
Easy to get wrong13% is not $13. It is 13 cents on every dollar, so a $1.00 item has 13¢ of tax.
Key word
- percent
- out of every 100; 10% means 10 out of every 100, which is one tenth
Ready to use it?
- Find 10%, 1% and 3% of a price.
- Find the 13% HST on a price.