Many times when you are on the go, you are headed somewhere that requires you to be there by a certain time. Today, I’m going to teach you how to use your journey as an opportunity for some mental maths!
Ease on Down the Road
What to Do
- A litre of gas costs $1.90 a litre. What does it cost for 5 litres? 10 litres? 15 litres? 20 litres? What is an easy way to figure this out? How can you estimate the cost by rounding the cost per litre?
- The speed limit is 65 kilometers per hour. How far will you go in 1 hour? Two hours? Three hours? How long will it take to go 500 kilometers?
Use a calculator to check your answers.
Parent Pointer: An important algebra concept is finding relationships between two quantities such as kilometers per hour or cost per litre.