1. 5th Grade Module 2 – Lesson 29
Lesson 29: I can solve division word problems involving multi-digit division with group size unknown and the number of groups unknown.
5th Grade Module 2 – Lesson 29

2. 5th Grade Module 2 – Lesson 29
Unit Conversions
.397 kg = ____ g
0.052 liters = ____ mL
.013 kg = ____ g
0.413 liters = ____ mL
1 kg = ___ g
1 liter = ___ mL
1 foot = ___ inches
1 lb = ___ oz
5th Grade Module 2 – Lesson 29

3. Divide Decimals by Two-Digit Numbers
.32 ÷ 40 = ____
8.4 ÷ 40 = ____
24 ÷ 16 = ____
4.9 ÷ 14 = ____
8.61 ÷ 21 = ____
5th Grade Module 2 – Lesson 29

4. 5th Grade Module 2 – Lesson 29
Application Problem
A one-year (52 week) subscription to a weekly magazine is $ Greg calculates that he would save $ if he subscribed to the magazine instead of purchasing it each week at the store. What is the price of the individual magazine at the store?
5th Grade Module 2 – Lesson 29

5. 5th Grade Module 2 – Lesson 29
Application Problem
A one-year (52 week) subscription to a weekly magazine is $ Greg calculates that he would save $ if he subscribed to the magazine instead of purchasing it each week at the store. What is the price of the individual magazine at the store? = ÷ 52 = 4.99
5th Grade Module 2 – Lesson 29

6. 5th Grade Module 2 – Lesson 29
Concept Development
Lamar has kilograms of potatoes to deliver in equal amounts to 18 stores. 12 of the stores are in the Bronx. How many kilograms of potatoes will he deliver to stores in the Bronx?
Will the amount delivered to the Bronx be more or less than half of the total amount? How do you know?
5th Grade Module 2 – Lesson 29

7. 5th Grade Module 2 – Lesson 29
stores in Bronx ÷ 18 = x 12 = 903 kg The stores in the Bronx receive 903 kg of potatoes.
5th Grade Module 2 – Lesson 29

8. 5th Grade Module 2 – Lesson 29
Concept Development
Valerie uses 12 oz of detergent each week for her laundry. If there are 75 oz of detergent in the bottle, in how many weeks will she need to buy a new bottle of detergent?
Solution on next slide…
5th Grade Module 2 – Lesson 29

9. 5th Grade Module 2 – Lesson 29
75 oz How many 12’s would fit in 75? Valerie will have to buy detergent after 6 weeks because she won’t have enough for a 7th week. 12 12 ?
5th Grade Module 2 – Lesson 29

10. 5th Grade Module 2 – Lesson 29
Concept Development
Jim Nasium is building a tree house for his two daughters. He cuts 12 pieces of wood from a board that is 128 inches long. He cuts 5 pieces that measure inches each, and 7 pieces evenly cut from what is left. Jim calculates that due to the width of his cutting blade, he will lose a total of 2 inches of wood after making all the cuts. What is the length of each of the seven pieces?
Solution on next slide…
5th Grade Module 2 – Lesson 29

11. 5th Grade Module 2 – Lesson 29
128 inches 7 pieces from what’s left Each of the 7 pieces is 6.75 inches long.
15.75
15.75
15.75
15.75
15.75 2
5th Grade Module 2 – Lesson 29

12. 5th Grade Module 2 – Lesson 29
Concept Development
The area of a rectangle is square meters. If the length is 16 m, what is its perimeter?
Solution on next slide…
5th Grade Module 2 – Lesson 29

13. The perimeter is 39.12 meters.
16 x ? = 56.96 16
Area = 56.96 ? ? 16
The perimeter is meters.
5th Grade Module 2 – Lesson 29

14. 5th Grade Module 2 – Lesson 29
Concept Development
A city block is 3 times as long as it is wide. If the total distance around the block is 0.48 kilometers, what is the area of the block in square meters?
Solution on next slide…
5th Grade Module 2 – Lesson 29

15. The area of the block is 10,800 square meters.
One side
One side 60
length
.48 km 480 m 60
width
One side
One side
480 ÷ 8 = 60 m per unit.
60 x 180 = 10,800.
The area of the block is 10,800 square meters.
5th Grade Module 2 – Lesson 29

16. Get Ready to Complete the Problem Set on Your Own!
Complete Pages 2.H.21 & 2.H.22 You will have 15 minutes to work. Try your Best!
5th Grade Module 2 – Lesson 29

17. 5th Grade Module 2 – Lesson 29
LET’S Debrief
What did the divisor represent in each equation?
What did the unknown represent for each?
How did that change the model you drew?
Which is easier to draw?
5th Grade Module 2 – Lesson 29

18. 5th Grade Module 2 – Lesson 29
EXIT
TICKET
Page 2.H.23
5th Grade Module 2 – Lesson 29