Subtract 6.90 × 10^(-5) from 5.11 × 10^(-4) and express the result in scientific notation.
Subtract 6.90 × 10-5 from 5.11 × 10-4 and express the result in scientific notation.
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To perform subtraction operation, first the numbers are written in such a way that they have the same exponent. Then subtraction of coefficients can be done.
(5.11 × 10-4) – (6.90 × 10-5)
= (5.11 × 10-4) – (0.690 × 10-4)
= (5.11 – 0.690) × 10-4
= 4.42 × 10-4
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