Quiz for Scientific Notation Trick for Calculation
6
1) Question : Convert 0.05 into scientific notation.
Explanation: This is the correct answer. A trick to use is to count how many digits you have after the decimal point. For 0.05, we have 2 digits after the decimal point( 0, and 5), so the exponent must be -2. It is important skill to know for the mcat because it will help simplify your calculations.
2) Question : which of the following is equivalent to 1.7
Explanation: This is the correct answer. We first count how many digits we have after the decimal point. We only have 1 digits after it, which is 7. We then write the whole number( 17) x 10^-1
3) Question : Convert 2.5 x 10^-3 back to its standard notation
Explanation: This is the correct answer. So, as shown in the figure below, start with 2.5. Count 3 digits backward, which turned out we have to add 2 zeros. So, 0.0025 is the correct answer.
4) Question : What is the scientific notation for 0.00076?
Explanation: This is the correct answer. If we started with 7.6 x 10^-4, we have to move 4 digits backward, which works to be equivalent to 0.00076.
5) Question : Convert 5.63 x 10^-2 back to its standard notation
6) Question : Convert 8.23 x 10^3 back to its standard notation
Explanation: This is the correct answer. If we move 3 digits after the decimal place, it turns out that we are adding 1 zero.
