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Does the order in which you perform operations in a numerical expression matter?
Wiki User
∙ 7y ago
Yes, unless all of the operations are additions, or all of them are multiplication. Otherwise, changing the order will change the result. The order of operations is determined by parentheses, or if none are present, by the PEDMAS sequence.
The order in which mathematical operations must be done has the acronym PEDMAS or PEMDAS. PEDMAS or PEMDAS, no matter how you spell it, gives the correct order for mathematical operations: 1. P - Parentheses, 2. E - Exponents, MD - Multiplication and Division, AS - Addition and Subtraction.
Wiki User
∙ 7y ago
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Does it matter what order you do your operations in equations with variables on both sides?
Not if you do all the calculations correctly. For example, in an expression such as:3(4 + 5) the parentheses specify that you should do the addition first. But in an algebraic expression, such as 3(x + 2) you can't even calculate "x + 2" as long as you don't know the value of "x"; so it might make more sense to divide by 3 (on both sides of the equation, of course), to get rid of the 3. Or you might open parentheses using the distributive property. There are often different ways to manipulate such an expression (or an equation that contains such an expression); if you do everything correctly, you should get the same result in all cases.
What is the Commutitive property of math?
In math, the Commutative Property refers to operations in which the order of the numbers being operated on does not matter. Multiplication and addition are commutative operations, which may be demonstrated by the algebraic equations "ab = ba" and "a + b = b + a", respectively.
A homeowner chooses 9 of 25 plants at a nursery to landscape her front yard Which expression gives the number of ways she can choose the plants?
If the order of choice does not matter, the expression is 25 X 24 X 23 X 22 X 21 X 20 X 19 X 18 X 17, which can also be written as 25!/16!.
What is associative property of addition?
The associative property of addition means that the order in which you add terms doesn't matter.(1 + 2) + 3 = (2 + 3) + 1 = (1 + 3) + 2* * * * *NO! The above answer is conflating the associative and commutative properties.The associative property for addition states that(a + b) + c = a + (b + c)The order in which the operations are carried out does not matter. And, as a result, either can be written, without ambiguity, as a + b + cThe associative property DOES NOT state that a + b = b + a. The order of the terms DOES matter. For that you need the operation to be commutative.There are mathematical operations that are associative but not commutative (matrix multiplication, for example).When elements are grouped without change of order, as:(a+b)+c=a+(b+c)
What is the difference between Identity Property Commutative Property Associative Property Distributive Property?
These are properties of algebraic structures with binary operations such as addition and/or subtraction defined on the set.The identity property, refers to a unique element of the set with special properties with respect to an operation.The commutative property states that the order of the operands does not matter. There are many algebraic structures where this property does not hold. The set of numbers with the operation subtraction or division do not have this property.The associative property states that the order in which a repeated operation is carried out does not matter.The distributive property is applicable when there are two binary operations defined on the set.
Is it true that you will always get the same result in a numerical expression no matter the order in which you perform?
false
You will always get the same result in a numerical expression no matter the order in which you perform the operations true or false?
False. Consider the expression 10 - 9 - 8 and let the brackets denote the operation to be performed next (if there are more than one). Then 10 - (9 - 8) = 10 - 1 = 9 While (10 - 9) - 8 = 1 - 8 = - 7
Will you always get the same result in a numerical expression no matter the order in which you perform the operations?
No. Here is a simple counterexample: 1 + 2 x 3 The answer is either 7 (if using the standard convention of doing the multiplication first), or 9 (if you ignore this standard and do the addition first). When doing a series of only additions, or only multiplicatons, you can do the additions (or the multiplications) in any order.
What is a math experssion?
If you mean Expression, then a math expression is any collection of numbers, variables, and operations with no given answer Examples of Expressions: 2+2 2x+7 53+7f Examples of what are NOT expressions (AKA, Equations): 2+2=4 2x+7=y 10x+7=0 The difference is all in whether or not you have a given answer on the other side of the "=". It doesn't matter whether or not it gives you the numerical value of it. So, a variable is still a possible answer to an equation to make it not an expression.
Does it matter in which order we do each operation?
Yea because the collection of rules that define which procedures to perform first order to evaluate a given mathematical expression.
What is a set of rules used to evaluate expression with more than one operation?
order of operations:);evaluate powers first, parenthesis second, multiplication and division third (if there is a combination of the two it doesn't matter the order you evaluate), and addition and subtraction last (like multiplication-division it doesn't matter the order you evaluate these two, a helpful tool for this step is to change all minus operations to plus negative).
Why does the order of operations matter?
Order of operations matters because you could potentially get an incorrect answer by not using it. e.g. (/ means divide by or represents a fraction [same thing]) 13+2/3 without brackets is 41/3 while (13+2)/3 = 15 Brackets Exponents (powers) Multiplication Division Addition Subtraction If you perform your operations by this rule you will always gain the correct answer
Chenists perform experiments to find out how different kinds of matter can change and what?
Matter
Why do chemists perform experiments?
Chemists perform experiments to find out different kinds of matter can change.
Does order matter in multiplication?
No. Multiplication is commutative so the order of the multiplicands does not matter. Multiplication is associative so the order in which the operations are carried out does not matter.
What do chemists perform experiments to find out what different kind of matter can change what?
not to sure about matter but ill give it a try
What is the difference between density and matter?
The difference is that Density is one way of measuring matter, its a math expression. While Matter is a physical substance.
