Using a calculator, work out
(4.57 × 10-10) - (3.78 × 10-11)
Give your answer in standard form.
4.57 x 10^-10 - 3.78 x 10^-11 = (4.57 - 0.378) x 10^-10 = 4.192 x 10^-10
So, (4.57 × 10^-10) - (3.78 × 10^-11) = 4.192 x 10^-10 in standard form.
(4.57 × 10^-10) - (3.78 × 10^-11)
To subtract these numbers, we need to ensure they have the same exponent. Let's rewrite 3.78 × 10^-11 in scientific notation with the exponent of 10^-10:
(4.57 × 10^-10) - (0.378 × 10^-10)
Now, we can subtract the coefficients:
4.57 - 0.378 = 4.192
Finally, we keep the exponent and write the result in standard form:
4.192 × 10^-10
So, the answer is 4.192 × 10^-10.
