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Question

Jason incorrectly simplified the expression: (4.7x10²)x(6.2x10⁴). Which step shows an error? Correct each step so that the expression is correctly simplified.

 

STEP 1: 4.7x6.2x10²x10⁴

STEP 2: (4.7x6.2)x(10²x10⁴)

STEP 3: 29.14x10⁸

STEP 4: 2.914x10⁶

Answer 1

Darnit Jason! 

 

Jason's error is in the final step.  He only moved the decimal over one place, not two.  So the final answer should be 2.914x10⁷ instead.