Warm-up

How high do you think the arch is in dolphins?  How wide is the base?

Warm-up

If it takes 20 avocados to produce 250 ml of oil, how many avocados do you need to produce 825 ml of oil?

Warm-up

If the radius of the front wheel of the bicycle is .75 meters, what is the circumference of the wheel?

Warm-up

Note:  I know from personal experience parades do not move at 2.5 mph constantly.  Usually, we start and stop.  I wanted students to think about reasonable vs standard numerical answers.