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Grades 2-5Parent Pointer
An important algebra concept is finding relationships between two quantities such as miles per hour or cost per gallon.
What to do
1. A gallon of gas costs $1.24 a gallon. What does it cost for 5 gallons? 10 gallons? 15 gallons? 20 gallons? What is an easy way to figure this out? How can you estimate the cost by rounding the cost per gallon?
2. The speed limit is 55 miles per hour How far will you go in 1 hour? Two hours? Three hours? How long will it take to go 500 miles?
3. Use a calculator to check your answers.
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