Sal thinks the answer to the expression 16+8÷2² is 6. Where did she go wrong?

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15-12-2014
Mathematics

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Sal thinks the answer to the expression 16+8÷2² is 6. Where did she go wrong?

Sagot :

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kelley2600 kelley2600 · Answer 1 · 2014-12-15T17:24:56-05:00

kelley2600 kelley2600

15-12-2014

The correct answer is 18. She went wrong because she solved the equation in the wrong order she did 16+8, then got 24 then solved the exponent got 4 then divided 24 by 4 getting 6

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csilt96 csilt96 · Answer 2 · 2014-12-15T17:25:07-05:00

csilt96 csilt96

15-12-2014

She didn't follow the order of operations. She added 16 and 8 before dividing. Remember PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction).

She should first square 2 to get 4, then divide 8 by 4, and finally add 2 to 16 to get 18.

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Sagot :

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