Scientific Notation: Adding and Subtracting

(Use correct number of significant figures. Use correct scientific notation.) Note: If a power of ten is not expressed, it is understood to be 100, which equals 1. Thus, 4.0 is understood to be 4.0 x 100. DIVISION: Divide the numbers as in any division problem. Subtract the denominator power of ten exponent from the numerator power of ten ... ................
................