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024 lesson 15

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024 lesson 15

  1. 1. Lesson 15<br />PROBLEM SOLVING INVOLVING MULTIPLICATION<br />Objectives <br />After this lesson, the students are expected to:<br /><ul><li>describe how to use the multiplication in problem solving;
  2. 2. follow the steps correctly in multiplication of word problem;
  3. 3. discuss the use of multiplication in problem solving.</li></ul>A screw machine can produce 95 screws in one minute. How many screws it can produce in one hour?<br />4433395138474<br />1. What is asked?<br />How many screws a screw machine can produce in one hour?<br />2. What are given?<br />Screw machine can produce 95 screws in a minute.<br />3. What operation to be used?<br />Multiplication<br />Solution:<br />60 minutes = 1 hour<br />95 crews x 60 minutes = n<br />Therefore, the screw machine can produce 5 700 crews in one hour.N = 5 700 screws.<br />Here is another example, <br />A department store bought 32 crates of portable radios. Each crate contains 50 radios. How many portable radios does the store have?<br />1. What is asked?<br />How many portable radios does the store have?<br />2. What are given?<br />50 portable radios in 1 crate and 32 crates<br />3. What operation to be used?<br />Multiplication<br />Solution:<br />1 crate = 50 radios<br />32 crates x 50 radios = n<br />N = 1 600 portable radios <br />Therefore, there are 1 600 portable radios does the store have.<br />-476250-285750WORKSHEET NO. 15<br />NAME: ___________________________________DATE: _____________ <br />YEAR & SECTION: ________________________RATING: ___________<br />19050098425<br />Answer the following word problem.<br /><ul><li>Victoria and her brother, Daniel, deliver Sunday papers together. She delivers 58 papers and he delivers 49 papers. Each earns 75 cents for each paper delivered. How much more does Victoria earn than Daniel each Sunday?
  4. 4. -4130565937874_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  5. 5. In one basketball stadium, a section contains 32 rows and each row contains 25 seats. If the stadium has 4 sections, how many seats it has?
  6. 6. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  7. 7. Season tickets for 45 home games cost P789. Single tickets cost P15 each. How much more does a season ticket cost than individual tickets bought of each game?
  8. 8. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  9. 9. -439539-231884A store has 124 boxes of pencils with 144 pencils in each box. How many pencils they have?
  10. 10. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  11. 11. An eagle flies 70 miles per hour. How far can an eagle fly in 15 hours?
  12. 12. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  13. 13. -4109545177494Mandy can laid 65 bricks in 30 minutes. How many bricks can Mandy lay in 5 hours?
  14. 14. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  15. 15. Sound waves travels approximately 1 100 ft. per sec. in air. How far will the sound waves travel in 3 hours?
  16. 16. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  17. 17. -476250-533400If a worker can make 357 bolts in one hour, how many bolts he can make in eight hours?
  18. 18. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  19. 19. If 1cubic yard of concrete costs P55.00, how much would 13cubic yards cost?
  20. 20. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.
  21. 21. -4141076273006One cassette seller sold 650 cassettes. The cassettes cost her P15.00 each and sold them for P29.00 each. What was her total profit?
  22. 22. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.</li></ul>SOLUTION:<br />

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