Library

IM: 6.3.5: Comparing Speeds and Prices (Lesson)

By Newsela Staff
Last updated 2 months ago
7 Questions
5.1: Closest
1.
Is the value of each expression closer to 1/2, 1, or 11/2?

  • 20 \div 18 __________
  • 9 \div 20 __________
  • 7 \div 5 __________
5.2: More Treadmills
Some students did treadmill workouts, each one running at a constant speed. Answer the questions about their workouts. Explain or show your reasoning.
  • Tyler ran 4,200 meters in 30 minutes.
  • Kiran ran 6,300 meters in 1/2 hour.
  • Mai ran 6.3 kilometers in 45 minutes.
2.

What is the same about the workouts done by:
  • Tyler and Kiran?
  • Kiran and Mai?
  • Mai and Tyler?

3.

At what rate did each of them run?

4.

How far did Mai run in her first 30 minutes on the treadmill?

Are you ready for more?
5.

Tyler and Kiran each started running at a constant speed at the same time. Tyler ran 4,200 meters in 30 minutes and Kiran ran 6,300 meters in 1/2 hour. Eventually, Kiran ran 1 kilometer more than Tyler. How much time did it take for this to happen?

5.3: The Best Deal on Beans
Four different stores posted ads about special sales on 15-oz cans of baked beans.
6.

Which store is offering the best deal? Explain your reasoning.

7.

The last store listed is also selling 28-oz cans of baked beans for $1.40 each. How does that price compare to the other prices?