Scientific Notation Review

Front

What is scientific notation?

Back

A way to express very large or very small numbers using powers of ten, in the form a x 10^n, where 1 ≤ a < 10 and n is an integer.

Front

How do you convert a standard number to scientific notation?

Back

Move the decimal point in the number until only one non-zero digit remains to the left of the decimal. Count the number of places moved; this becomes the exponent of 10.

Front

What is the scientific notation for 5000?

Back

5.0 x 10^3.

Front

What is the scientific notation for 0.0045?

Back

4.5 x 10^-3.

Front

How do you multiply numbers in scientific notation?

Back

Multiply the decimal parts and add the exponents.

Front

What is the result of (2.5 x 10^3) * (4.0 x 10^2)?

Back

1.0 x 10^6.

Front

How do you divide numbers in scientific notation?

Back

Divide the decimal parts and subtract the exponents.

Front

What is the result of (8.0 x 10^5) / (2.0 x 10^2)?

Back

4.0 x 10^3.

Front

What happens to the exponent when you move the decimal to the left in scientific notation?

Back

The exponent increases.

Front

What happens to the exponent when you move the decimal to the right in scientific notation?

Back

The exponent decreases.