1. By the end of the lesson, you will be able to…
Lesson 19 Objective: Convert measures involving whole numbers and solve multi-step word problems
5th Grade Module 4– Lesson 19
K. Clauson

2. Application Problem B A
Angle A of a triangle is 1/2 the size of angle C. Angle B is 3/4 the size of angle C. If angle C measures 80 degrees, what are the measures of angle A and angle B? B A

3. Multiply Decimals
4 x 2 = 4 x 3 = 4 x 0.2 = 0.4 x 3 = 0.4 x 0.2 = 0.4 x 0.3 = 0.04 x 0.2 = 0.04 x 0.3 = 2 x 9 = 2 x 0.9 = 0.2 x 0.9 = 0.02 x 0.9 =

4. Convert Measures 1 yd = _____ ft 1 ft = _____ in
2 cups = _____ pt 1 gal = _____ qt
16 c = _____pt 8 gal = ____ _qt

5. Problem 1: 30 centimeters = _____ meters
Concept Development
Problem 1: 30 centimeters = _____ meters
Which is a larger unit?
We are expressing a smaller unit in terms of a larger unit.
Is 30 cm more or less than 1 meter?
Is it more or less than half a meter?
Keep this in mind as we work.
We want to rename these centimeters using meters.
30 cm is the same as 30 copies of 1 cm
Let’s rename 1 cm as a fraction of a meter. What fraction of a meter is 1 cm?

6. Problem 1: 30 centimeters = _____ meters
It takes 100 cm to make a meter, so 1 cm would be 1 hundredth of a meter.
100 cm = 1 meter so 1 cm = 1/100 meter
30 cm = 30 x 1 cm = 30 x 1/100 meter
Now we have 30 copies of 1/100 meter
How many hundredths of a meter is that in all?

7. Problem 1 Answer: 30 centimeters = _____ meters
30 cm = 30/100 = 3/10 m

8. Problem 2 : 9 inches ____ ft
9 inches = 9 x 1 inch
9 inches is 9 copies of 1 inch
What fraction of a foot is 1 inch?
Before we rename 1 inch, let’s estimate. Will 9 inches be more than half or less than half a foot?

9. Problem 2 Answer: 9 inches ____ ft
9 x 1/12 ft Now we have 9 copies of 1/12 ft
9 = 3

10. Problem 2b: 24 inches = ______ yard
Think: 24 inches is 24 copies of 1 inch
How many inches are in a yard?

11. Work with a partner to solve!
Problem 3: Koalas will often sleep for 20 hours a day. For what fraction of a day does a Koala often sleep?
What will we need to do to solve this problem?
We’ll need to express hours in days. We’ll need to convert 20 hours into a fraction of a day.
Work with a partner to solve!

12. Problem 3: Koalas will often sleep for 20 hours a day
Problem 3: Koalas will often sleep for 20 hours a day. For what fraction of a day does a Koala often sleep?

13. Problem 4: 15 inches = _____ feet
Note! The process of converting will be the same as we have done already, but now our answer will be greater than 1.
Work with a partner to solve this problem!

14. Problem 5: 24 ounces = _____ pound

15. Get Ready to Finish the Problem Set on Your Own!
Complete Problem Set for Lesson 19.
You will have 10 minutes to work!
Fast finishers:
Math Center Activities- choice boards, extra Sprint challenge
CML packets/ worksheets
Problem Solving pages
5th Grade Module 4– Lesson 19
K. Clauson

16. LET’S Debrief Take 2 minutes to check your answers with your partner.
Let’s share any insights you had while solving these problems.
5th Grade Module 4- Lesson 19
K. Clauson

17. EXIT
TICKET
LESSON 19
5th Grade Module 4– Lesson 19
K. Clauson