1. Solve additive compare word problems modeled with Tape Diagrams
Lesson 17
Solve additive compare word problems modeled with Tape Diagrams

2. Lesson Objectives After this lesson you will be able to:
Solve an additive compare word problem.

3. Practice Problem # 1 A pair of hippos weighs 5,201 kilograms together.
The female weighs 2,038 kilograms.
How much more does the male weigh than the female?

4. Practice Problem # 1 A pair of hippos weighs 5,201 kilograms together.
The female weighs 2,038 kilograms.
How much more does the male weigh than the female?
What is this problem asking us to do and how can we solve this problem?

5. Practice Problem # 1 A pair of hippos weighs 5,201 kilograms together.
The female weighs 2,038 kilograms.
How much more does the male weigh than the female?
What is this problem asking us to do and how can we solve this problem?

6. Practice Problem # 1 A pair of hippos weighs 5,201 kilograms together.
The female weighs 2,038 kilograms.
How much more does the male weigh than the female?
What is this problem asking us to do and how can we solve this problem?
Let’s make a tape diagram to represent the problem.

7. Problem # 1
2,038
Female
5,201
Male M

8. Practice Problem # 1 A pair of hippos weighs 5,201 kilograms together.
The female weighs 2,038 kilograms.
How much more does the male weigh than the female?
Before we can figure out the difference we need to find the weight of the male hippo.

9. Practice Problem # 1
In order to solve this problem we need to subtract the weight of the female hippo from the weight of the pair.
5,201
- 2,038

10. Solve this problem on your own.
Practice Problem # 1
In order to solve this problem we need to subtract the weight of the female hippo from the weight of the pair.
5,201
- 2,038
Solve this problem on your own.

11. Practice Problem # 1
In order to solve this problem we need to subtract the weight of the female hippo from the weight of the pair.
5,201
- 2,038
3,163 9 1 10 11

12. Now what do we need to do with this number?
Practice Problem # 1
In order to solve this problem we need to subtract the weight of the female hippo from the weight of the pair.
5,201
- 2,038
3,163 9 1 10 11
Now what do we need to do with this number?

13. We need to subtract 2,038 from this number.
Practice Problem # 1
In order to solve this problem we need to subtract the weight of the female hippo from the weight of the pair.
5,201
- 2,038
3,163 9 1 10 11
We need to subtract 2,038 from this number.

14. Practice Problem # 1
3, ,038

15. Practice Problem # 1
3, , ,125 5 13

16. Problem # 2
At a concert 49,381 people were standing up front by the stage.
147,390 people sat in regular stadium seats.
How many fewer people stood up front by the stage than sat in the stadium seats.

17. Problem # 2
At a concert 49,381 people were standing up front by the stage.
147,390 people sat in regular stadium seats.
How many fewer people stood up front by the stage than sat in the stadium seats.
What do we need to do to solve this problem?

18. Problem # 2
At a concert 49,381 people were standing up front by the stage.
147,390 people sat in regular stadium seats.
How many fewer people stood up front by the stage than sat in the stadium seats.
What do we need to do to solve this problem?
We need to subtract!

19. Problem # 2
147, ,381
Try solving this problem on your own.

20. Problem # 2 13
147, , ,009 14 17 8 10

21. YOUR TURN ! : ) Complete page 92 in your Math Book.
You may work by yourself or with a partner.