To subtract numbers in scientific notation, the exponents must be the same. To achieve this, we need to convert 4.8 x 10^-3 and 9.4 x 10^-6 to have the same exponent.
4.8 x 10^-3 = 0.0048 x 10^0 (dividing the exponent by 3)
9.4 x 10^-6 = 0.0094 x 10^0 (dividing the exponent by 6)
Now that they have the same exponent, we can subtract them:
0.0048 x 10^0 - 0.0094 x 10^0 = (0.0048 - 0.0094) x 10^0
0.0048 - 0.0094 = -0.0046
Therefore, the answer is -0.0046 x 10^0.
To express the answer in scientific notation rounded to 2 decimal places, we need to move the decimal point in -0.0046 two places to the right.
-0.0046 x 10^0 = -0.46 x 10^-2
Rounding to 2 decimal places, the answer is approximately -0.46 x 10^-2.
Calculate 4.8 x 10^-3 - 9.4 x 10^-6. Express the answer in scientific notation rounding to 2 decimal places
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