In Math today, we continued to review how to use variables to write equations. Check out the example below: Students needed to read the word problem and then write an equation that could be solved to answer the problem. The first thing I always do when I am reading a word problem is to highlight or circle the important numbers. So, Mary-George has 4 buckets of clams. Altogether she has 120 clams. That word "altogether" is a great clue! That means that my total is going to be 120 clams. I can write " = 120" because I know that the equation will equal 120. Then I need to decide what operation I am being asked to use. In this problem, Mary-George has 4 buckets with the same amount of clams in each bucket. Four groups of an equal amount. That is the same as saying "clams in the bucket + clams in the bucket + clams in the bucket + clams in the bucket = 120" or "4 x clams in the bucket = 120." Now, I should use a variable to represent my unknown value. The unknown value is the amount of clams in each bucket. I chose to use "c" to represent clams. Now my equation reads "4 x c = 120," which is a great equation that can be solved to solve this word problem!
4 Comments
dhruvi
11/8/2016 05:30:26 pm
Hi ms.barrington.so i know that i have a lot of questions but i have a white board at home and did this same question about the clams,so i actully wrote it like 120=4xb and 120=bx4 then 120/4=b,120/b=4.would this be correct,cause it is weird i underswtand most stuff in this unit but this is confusing.so i was just wondering is that still correct?because you wrot it like 4xb=120 i wrot it likethe other waqy around.
Reply
11/9/2016 04:25:58 pm
These equations are all great! They all represent the story problem and they can all be evaluated to find out what b equals. Remember, as long as both sides of your equation are equal, it is a good equation. There is no wrong way or backwards way to write it :)
Reply
rukaya
11/11/2016 11:43:49 am
i realy do not get it :( 11/12/2016 09:27:15 pm
Mary-George has 4 buckets of clams. Altogether she has 120 clams. We need to find out how many clams are in each bucket.
Reply
Your comment will be posted after it is approved.
Leave a Reply. |
Archives
February 2023
Categories |