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Why is it important to use the order of operations when evaluating an algebraic expression?
Wiki User
∙ 14y ago
(B)rackets
(O)rder
(D)ivision
(M)ultiplication
(A)ddition
(S)ubtraction
According to BODMAS, multiplication should always be done before addition, therefore 17 is actually the correct answer according to BODMAS and will also be the answer which your calculator will give if you type in 2 + 3 x 5
I am assuming that you know what everything in BODMAS means apart from "Order". Order is actually a poor word to use here "Power" would be much better though BPDMAS doesn't quite have the same ring to it!
Order means anything raised to the power of a number.
You may have heard of Einstein's famous equation E = mc2 here it can be said that c is raised to the power 2, or c has order 2 or c is squared (they all mean the same thing!).
Here's an example to show how to use all the features of BODMAS:
Explain the answer that a calculator would give to the calculation 4 + 70/10 x (1 + 2)2 - 1 according to the BODMAS rules.
Brackets gives 4 + 70/10 x (3)2 - 1
Order gives 4 + 70/10 x 9 - 1
Division gives 4 + 7 x 9 - 1
Multiplication gives 4 + 63 - 1
Addition gives 67 - 1
Subtraction gives 66
THE PART OF BODMAS MOST OFTEN FORGOTTEN
It is quite common for people to forget that brackets always come first - which means you can calculate the answer of whatever is in the brackets before you attempt to calculate the rest of the problem.
Once you've worked out everything in the brackets, normally these sort of problems become very easy!
Wiki User
∙ 14y ago
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Why is it important to use order of operations to evaluate algebraic expressions?
I think it is important because you need to know it when you get older.
What is an algebra expression?
An algebraic expression is technically any mathematical form that contains a variable.An expression is algebraic if it involves a finite combination of numbers and/or variables and algebraic operations (addition, subtraction, multiplication, division, or exponentiation [raising to a power]). Fractional exponentiation is equivalent to extracting a root. For example: sqr(9) = 9^(1/2) = 3.Following are four examples of expressions:9^(1/2)5 + 2x/y[-b ± (b2 - 4ac)^(1/2)]/2aEquations contain an "=" (equals) sign. Expressions do not.Two important types of equations are:linear equations : y = mx + bquadratic equations: y = ax2 + bx + c
How do you write in algebraic expression subtract 4 from n then divide by 5?
(n-4)/5 Remember p.e.m.d.a.s. The parentheses signify which part of the expression to do first. They are very important. You get a different answer without them.
Why might it be important to write algebraic expressions?
I could help when you are dealing wit a hidden variable and will help solve the question. The expression has no answer so it shows the work.
In algebra why is it important to know the order of operations for addition multiplication etc.?
That is important because: 1) The order in which operations are carried out can affect the result. 2) You can use parentheses to specify an order, but parentheses are often omitted for simplicity. In this case, you must know how to interpret an expression correctly.
Examples of definition of rational algebraic expression?
A rational algebraic expression is the ratio of two algebraic expressions. That is, one algebraic expression divided by another. It is important that the domain is defined in such a way the the rational expression does not involve division by 0.
Why is it important to apply order of operations when evaluating expressions?
If you change the order of operations, you will get a different result. The person who wrote the expression had a specific order of operations in mind (using generally-accepted rules), so arbitrarily using some other order of operations is, quite simply, wrong.
Why is it important to use order of operations to evaluate algebraic expressions?
I think it is important because you need to know it when you get older.
What is an algebra expression?
An algebraic expression is technically any mathematical form that contains a variable.An expression is algebraic if it involves a finite combination of numbers and/or variables and algebraic operations (addition, subtraction, multiplication, division, or exponentiation [raising to a power]). Fractional exponentiation is equivalent to extracting a root. For example: sqr(9) = 9^(1/2) = 3.Following are four examples of expressions:9^(1/2)5 + 2x/y[-b ± (b2 - 4ac)^(1/2)]/2aEquations contain an "=" (equals) sign. Expressions do not.Two important types of equations are:linear equations : y = mx + bquadratic equations: y = ax2 + bx + c
In math how do you simplify an expression?
Math can be difficult at times. To simplify a math expression, it is important to follow the order of operations, or PEMDAS.
How would you explain the order of operations. How does it affect the value of an expression and why is this important?
You take the caca out the rectum and drop the caca in the toilet. That is the order of operations.
How do you write in algebraic expression subtract 4 from n then divide by 5?
(n-4)/5 Remember p.e.m.d.a.s. The parentheses signify which part of the expression to do first. They are very important. You get a different answer without them.
Why might it be important to write algebraic expressions?
I could help when you are dealing wit a hidden variable and will help solve the question. The expression has no answer so it shows the work.
What evaluating economic systems it is most important to consider?
In evaluating economic systems, it is most important to consider give me a answer
Are examinations important for evaluating?
yes it's important
What is most important to consider when evaluating a data source?
The most important thing to consider when evaluating a data source is the name of the author and his reputation.
In algebra why is it important to know the order of operations for addition multiplication etc.?
That is important because: 1) The order in which operations are carried out can affect the result. 2) You can use parentheses to specify an order, but parentheses are often omitted for simplicity. In this case, you must know how to interpret an expression correctly.
