An expression is shown.
(2.49 × 10^-2) + (3.15×10^-3) + (1.02 × 10^-2)
What is the value of the expression in standard form?
To add numbers in scientific notation, the exponents must be the same.
So, let's convert the second and third terms to the same exponent as the first term:
(3.15 × 10^-3) + (1.02 × 10^-2) = (0.00315 × 10^-2) + (0.0102 × 10^-2)
Now we can add the numbers:
(0.00315 + 0.0102) × 10^-2 = 0.01335 × 10^-2
To write this value in standard form, we need to move the decimal point 2 places to the right:
0.01335 × 10^-2 = 0.001335
Therefore, the value of the expression in standard form is 0.001335.