Subtract 6.90 × 10-5 from 5.11 × 10-4 and express the result in scie

1.	Subtract 6.90 × 10-5 from 5.11 × 10-4 and express the result in scientific notation.
Answer» 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

Subtract 6.90 × 10-5 from 5.11 × 10-4 and express the result in scientific notation.

Answer»

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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Subtract 6.90 × 10-5 from 5.11 × 10-4 and express the result in scientific notation.

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