d = r × t
Before you read
Test yourself first: 5 questions
Question 1 of 5
A car travels 180 miles in 3 hours. What is its average speed?
Answer: C. Speed = distance ÷ time = 180 ÷ 3 = 60 miles per hour.
Question 2 of 5
A car travels 150 miles in 3 hours. What is its average speed?
Answer: B. Speed = distance ÷ time = 150 ÷ 3 = 50 mph.
Question 3 of 5
A car travels at 60 miles per hour. How far does it go in 2.5 hours?
Answer: B. Distance = speed × time = 60 × 2.5 = 150 miles.
Question 4 of 5
How many centimeters are in 1.5 meters?
Answer: B. 1 meter = 100 cm, so 1.5 m = 150 cm.
Question 5 of 5
Convert 90 centimeters to meters.
Answer: B. 1 m = 100 cm, so 90 cm = 0.9 m.
Keep the streak going with more questions like these, each with a full rationale.

