Math Trial And Error Word Problem Solving
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Examples Of Trial And Error Problem Solving
4 Thread: 5th grade word problem Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Search Thread Advanced Search trial and error method of factoring Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 10-21-2009,09:28 AM #1 Liam View Profile View Forum Posts Private Message New Member Join Date Oct 2009 Posts 2 5th grade word problem There are 5 times
How To Solve Cubic Equations By Trial And Error Method
as many red peppers as green peppers. There are 32 more red peppers than green peppers. How many peppers are there altogether? I figured out the answer (48) by trial and error, but I don't know how to get it using a method. Can you show me? Reply With Quote 10-21-2009,10:10 AM #2 Mrspi View Profile View Forum Posts Private Message Senior Member Join Date Dec 2005 Location CO, USA Posts 2,125 Re: 5th grade word trial and error method calculator problem Originally Posted by Liam There are 5 times as many red peppers as green peppers. There are 32 more red peppers than green peppers. How many peppers are there altogether? I figured out the answer (48) by trial and error, but I don't know how to get it using a method. Can you show me? I think at the fifth grade level, the "guess and check" (another name for "trial and error") method is expected. But, you can certainly solve this problem using algebra. Let g = number of green peppers Let r = number of red peppers Since we know that there are 5 times as many red peppers as green peppers, r = 5g And we also know that there are 32 more red peppers than green peppers: r = g + 32 You've got two expressions, each of which is equal to r. Those expressions must be equal to each other: 5g = g + 32 Solve that for g, use the result to determine r, and then realize that the question asks for the total number of peppers, which is r + g. Reply With Quote 10-21-2009,10:12 AM #3 Loren View Profile View Forum Posts Private Message Senior Member Join Date Aug 2007 Posts 1,303 Re: 5th grade word problem Originally Posted by Liam There are 5 times as many re
math, algebra skills, or a combination of both to solve the problems As I solve these perimeter word problems, I will make an attempt to give you some problems solving skills and show you that the problems could be solved
Trial And Error Problem Solving Techniques
with basic math,algebra, or both. Word problem #1: The length of a side of a
Guess And Check Problem Solving Questions
hexagon is 2 inches. What is the perimeter? Important concept: Hexagon. It means 6 equal sides. p = 2 + 2 + 2 trial and error method of learning + 2 + 2 + 2 = 4 + 4 + 4 = 8 + 4 = 12 inches Word problem #2: The perimeter of an equilateral triangle is 6 inches. What is the length of a http://www.freemathhelp.com/forum/threads/63337-5th-grade-word-problem side? Important concept: Equilateral. It means 3 equal sides. There are many ways to approach this problem. Use of basic math skills: Since the triangle has 3 equal sides, you can just say to yourself, " What same number do I add three times to get 6?" Since 2 + 2 + 2 = 6, then the length of one side is 2 Use of algebra: Let x be the side you are looking for x http://www.basic-mathematics.com/perimeter-word-problems.html + x + x = 6 3x = 6 3x/3 = 6/3 ( Divide both sides by 3) x = 2 Word problem #2: The perimeter of a rectangle is 42 inches. If the width is 8, what is the length? Use of basic math skills: Important concept: A rectangle has four sides. Parallel and opposites sides are equal. Since opposite sides are equal, there are two sides (widths) measuring 8 and 8 Therefore, adding two sides give 8 + 8 = 16 The length of the two remaining sides totals to 42 - 16= 26 Since these two sides are equal, just divide by 2 to get the measure of the length of the rectangle 26/2 = 13, so the length is 13 Use of algebra: P = 2 × L + 2 × W Replace all known values into the formula. 42 = 2 × L + 2 × 8 42 = 2 × L + 16 Solve the resulting equation: 42 - 16 = 2 × L + 16 - 16 26 = 2 × L 26/2 = (2 × L)/2 13 = L Word problem #3: When the perimeter of a regular polygon is divided by 5, the length of a side is 25. What is thename of the polygon? What is the perimeter? Use of basic math skills: Important concept: Regu
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