Lesson 10 Scientific Notation Multiply and Divide

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 multiply numbers in scientific notation?

Back

Multiply the coefficients (the numbers in front) and add the exponents of the powers of ten.

Front

How do you divide numbers in scientific notation?

Back

Divide the coefficients and subtract the exponent of the denominator from the exponent of the numerator.

Front

What is the result of (2.5 x 10^3) x (4 x 10^2)?

Back

10 x 10^5 or 1 x 10^6.

Front

What is the result of (5 x 10^4) / (2 x 10^2)?

Back

2.5 x 10^2.

Front

If you add exponents in scientific notation, what operation are you performing?

Back

Multiplication.

Front

If you subtract exponents in scientific notation, what operation are you performing?

Back

Division.

Front

What happens to the decimal point when you increase the exponent in scientific notation?

Back

The decimal point moves to the right.

Front

What happens to the decimal point when you decrease the exponent in scientific notation?

Back

The decimal point moves to the left.

Front

What is the simplified version of (3.0 x 10^5) + (2.0 x 10^5)?

Back

5.0 x 10^5.