SOLVING WORD PROBLEMS

Lesson 5 SOLVING WORD PROBLEM Objectives After this lesson, the students are expected to: discuss how to solve a word problem; solve any given problems systematically; use problem solving plan in solving any given word problem. Throughout this lesson, we will be solving problems that deal with real numbers. In solving word problems, the following plan is suggested: This problem solving plan should be used every time we solve word problems. Careful reading is an important step in solving the problem. This lesson serves as an introduction to the next chapter. 563880316865 PROBLEM SOLVING PLAN Understand the problem. Devise a plan. Carry out the plan. Check the answer. One harvest season, a farmer harvested 531 sacks of rice. This was 87 more than his previous harvest. How many sacks did he harvest during the previous season? Example: PROBLEM SOLVING PLAN 1. UNDERSTAND THE PROBLEM What is the problem about?What information is given?What is being asked?Understand the problem and get the general idea. Read the problem one or more times. Each time you read ask: Represent what is asked with a symbol. {The problem is about the number of sacks harvested. Let S be the number of sacks during the previous harvest.} 2. DEVISE A PLAN This is a key part in the 4 step plan for solving problems. Different problem solving strategies have to be applied. A figure, diagram, chart might help or a basic formula might be needed. It is also likely that a related problem can be solved and can be used to solve the given problem. Another devise is to use the “trial and learn from your errors” process. There is a lot of problem solving strategies and every problem solver has own special technique. “87 more” suggests addition and we can write a formula:87+S=531. 3. CARRY OUT THE PLAN Solve the equations: 87+S=531 S=531-87 S=444 sackIf step two of the problem solving plan has been successfully completed in detail, it would be easy to carry out the plan. It will involve organizing and doing the necessary computations. Remember that confidence in the plan creates a better working atmosphere in carrying it out . 4. CHECK THE ANSWER This is an important but most often neglected part of problem solving. There are several questions to consider in this phase. One is to ask if we use another plan or solution to the problem do we arrive at the same answer. . It is reasonable that the farmer harvested 444 sacks during the previous harvest. His harvest now which is 531 is more than the last harvest 401002510795 -400049-278130WORKSHEET NO. 5 NAME: ___________________________________DATE: _____________ YEAR & SECTION: ________________________RATING: ___________ -637951285 A. Discuss the different problem solving plan briefly. 1. Understand the problem ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________. -40402611598512. Devise a plan-___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________. 3. Carry out the plan ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________. Check the answer ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________. -421738-462758B. APPLICATION: Solve the given word problem correctly. Maria has 17 candies and her friends gave her 3 candies each. If she has 3 friends, how many candies did she have? ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________. ,[object Object],-4034226632025___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________. ,[object Object],___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.

SOLVING WORD PROBLEMS

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