Friday, February 12, 2010

TRUE OR FALSE: The second step when evaluating the expression 81+3-9+6+19 is 81+3?

If all the operations were addition, you could do them in any order. However, since subtraction is involved, you must do them in strict left-to-right order until you have completed the subtraction.





(81 + 3) - 9 + (6 + 19) is much different than (81 + 3) - (9 + 6 + 19). The first one is the way you must evaluate it, to come out with an answer of 100.





The answer to your original question is maybe, since you could evaluate the (6 + 19) first, but really, it should be false, since you should evaluate it left to right.TRUE OR FALSE: The second step when evaluating the expression 81+3-9+6+19 is 81+3?
ya, sure. it doesnt matter b/c they are all addition/subtraction. so you can just do the math straight across.TRUE OR FALSE: The second step when evaluating the expression 81+3-9+6+19 is 81+3?
This it true only if you realize that you add the ones to the equation by adding and you subtract the ones by subtracting. You can't group together the two different ones.
You can do it in any order. If you want to do 81+3 second, that's okay. Most people would do that first.
yes. in evaluating the expression like this follow the rule of BEODMAS means Bracket, Exponent, Of (multiply), Division, Multiplication, Addition and Subtraction.
this answer is false because 81+3-9+6+19=100 but 81+3=84 so 100 is not equal to 81so this answer is wrong. it's mean81+3-9+619 is 81+3.

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