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why do we use order of operations in math. 8 3 times 2 8 3 times 2 because we have all agreed that if we have an expression with at least three numbers that are combined using addition and multiplication we will multiply before we add. When you see a math problem containing parentheses you need to use the order of operations to solve it.
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The ordering is determined by the mathematics of operators like - and. This prealgebra-arithmetic lesson explains why we need an official order of operations in math. 1 plus 2 equals 3 and then 3 times 3 equals 9.
Some of the early calculators and some inexpensive ones do NOT use the order of operations.
The example above illustrates that you must do the calculations in the correct order of operations to get the correct answer. In mathematics and computer programming the order of operations or operator precedence is a collection of rules that reflect conventions about which procedures to perform first in order to evaluate a given mathematical expression. Learn about Order of Operations 5oa1 with Mr. Its important to know that PEDMAS is just a mnemonic - a way to remember the order in which to perform operations.
