You use a microscope to look at bacteria that is 0.0034 millimeter long. The microscope magnifies the bacteria 430 times. How long does the bacteria appear to be when you look at it through the microscope?

ANSWER: 1.562
move the decimal point of 0.0034 to the right  to make it a whole number which is 34. Then multiply 34 times 430 which is 15,620.
move the decimal point  (which is at the end) 4 times to the left
the answer will be 1.562