Express 0.00342 in scienific notation.?

3.42 x 10^(-3)

3.42 X 10 -3

3.42*10^-3

3.42 *10 ^-3

3.42 * 10^-3

3.42 x 10^(-3)

To find this, you need to move the decimal place as so that the number is greater or equal to one but less than ten. Then, you write the number as multiplied by ten raised to the number of spaces you had to move the decimal. If you move it to the left, that number is written as positive; if you move it to the right, that number is written as negative.

So, for this problem, your answer would be 3.42 * 10^(-3) as you had to move the decimal 3 to the right.

3.42 X 10^-3

3.42 times 10 -3 (exponent)

this is because you would move the decimal between the two numbers that are less that ten and since you move the decimal to make the number positive, the exponent is negative

0.00342
= 3.42 x 10^-3