PROBLEM SOLVING STRATEGY 1: Working Backward

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# PROBLEM SOLVING STRATEGY 1: Working Backward - PowerPoint PPT Presentation

##### PROBLEM SOLVING STRATEGY 1: Working Backward

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1. PROBLEM SOLVING STRATEGY 1: Working Backward ? GOAL Presented by: IMPoME 2011 Evangelista L.W.P. (20112812003); HerminaDisnawati (20112812015); ShahibulAhyan (20112812010)

2. ? GOAL What is “working backward” ?????

3. Developing time schedule “working backwards” in real life …….

4. Mathematics Problems 2.2

5. Mathematics Problems 2.2

6. Solution:

7. Problem 2.7

8. Solution: Restart 11’ start cooking 15 start = 11’ start 11 + 4 rang = 11’ 11 - 7 7’ 15’ 11’ – 7’ = 4’ Keterangan: Timer 7 Timer 11

9. Mathematics Problems 2.9

10. Solution: 3 12 10 j= 18 k= 8+4=12 2= 1/4l 4= 1/3k 1/8p= 2 l= 8=4/9j p=14+2 =16 5/9=10 2/3 = 8 5 7/8p = 14 3/4l= 6 Delivered: 18 + 10 + 12 + 3 = 43

11. Mathematics Problems 2.10

12. Solution:

13. Mathematics Problems 2.14

14. Solution: