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Unit 5 - Lesson 10 - Grade 5: Illustrative Mathematics

Last updated 9 months ago

11 questions

Note from the author:

Grade 5 Unit 5
Lesson 10: Solve Problems with Decimals
CC BY 2021 Illustrative Mathematics

Instructions

Grade 5 Unit 5
Lesson 10: Solve Problems with Decimals
CC BY 2021 Illustrative Mathematics

Lesson: Solve Problems with Decimals

Notice and Wonder: The Luge (Warm Up)

1

What do you notice?

1

What do you wonder?

How Accurate Is It?

1

How would the results of the race change if the times were recorded to the nearest second?

1

How would the results of the race change if the times were recorded to the nearest tenth of a second?

1

How would the results of the race change if the times were recorded to the nearest hundredth of a second?

1

An athlete recorded a time of 48.85 seconds to the nearest hundredth of a second. What are the possible times of this athlete recorded to the thousandth of a second?

1

An athlete recorded a time of 48.615 seconds to the nearest thousandth of a second. What are the possible times that this athlete recorded to the nearest hundredth of a second?

Compare Speeds

1

The table shows the top speeds, in miles per hour, of 5 luge athletes:

List the top speeds of the athletes in decreasing order.

1

The table shows the top speeds, in miles per hour, of 5 luge athletes:

Do any of the athletes have the same top speed rounded to the nearest tenth of a mile per hour? What about rounded to the nearest mile per hour?

1

The table shows the top speeds, in miles per hour, of 5 luge athletes:

There was a sixth athlete who was faster than the rider at 82.80 mph, but slower than the rider at 82.81 mph. What could the speeds of the 3 athletes be if all measured to the nearest thousandth of a mile per hour?

Cool Down: Luge Rider

1

A luge rider finished a race in 49.256 seconds. Determine the time rounded to the nearest tenth and hundredth of a second.