Solve a subtraction problem (2-digit or 3-digit with regrouping, example: 222-56, using two of these methods a. Describe why the method works and give a mathematical explanation. (Because the next step is… OR Because it gets you the right answer…is not a mathematical explanation). What makes the method a viable method that works with any problem? Method E32,427-15,826Method F53 53-38 +61X14351- 85+15351+914X2651266+Start on the left. 3 - 1 is 2, but before I write that down, I look atthe next column to see if there's going to be a problem. There is,so make the 2 a 1 and write it down.I can't take 5 from 2, so I do a different procedure: figure out howmany more it will take to make the 5 a ten (it's 5), then add thatto the 2 to get 7. But before I write that down, I check the nextcolumn over.There's a problem, so reduce the 7 by 1 to get 6 and write it down.For 4-8, I need to do my alternative procedure: It'll take 2 moreto make 10, then add that to 4 to get 6. But check the nextcolumn before going on.I can't tell with 2-2, so check the next column. 7 - 6 won't be aproblem, so write down the original 6 under 4 - 8. 2 - 2 is 0, andthere is no problem in the next column so write it down.7-6 is 1, and there is no next column, so write it down. Theanswer is 16,601.Transform into an addition problem by subtracting each numberin the bottom (subtrahend) from 9. Thus, 3 becomes 6, 8 becomes1. Now add. When done, drop the 1 in the largest place and add 1to the ones place to get the answer of 15.Basically the same, but be sure to replace leading (invisible) zeroswith 9. Method C53-38520401- 287200- 80120611480-63 minus 8 is negative 5. I'm going to hold that in my head while Ido the tens.50 minus 30 is 20.Combine negative 5 and the 20 and my answer is 15.If I wanted to, I could have written down the 20 and -5 belowthat and gotten 15.400 minus 200 is 200.Nothing minus 80 is -80.1 minus 7 is negative 6.I take the 80 from the 200 and get 120.Then I take away 6 more and get 114.Method D53 55-38-4015401 ૧૦૧-287 -290 -30041411453 - 38 is too hard, so add 2 to the 53 and 2 to the 38 making55-40. The answer is 15.401 - 287 is too hard. Make it 404 - 290, but you'restill not done. That becomes 414-300, which is easy,so subtract!

Let's solve the subtraction problem 222 - 56 using two different methods:

Solve a subtraction problem (2-digit or 3-digit with regrouping, example: 222-56, using two of these methods a. Describe why the method works and give a mathematical explanation. (Because the next step is… OR Because it gets you the right answer…is not a mathematical explanation). What makes the method a viable method

Solve a subtraction problem (2-digit or 3-digit with regrouping, example: 222-56, using two of these methods a. Describe why the method works and give a mathematical explanation. (Because the next step is… OR Because it gets you the right answer…is not a mathematical explanation). What makes the method a viable method

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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