Exponent Laws Simplifying exponents Scientific notation Add and Subtract with Scientific Notation Multiply and Divide with Scientific Notation

When I multiply powers with the same base I _________ the exponents?

ADD

When I divide powers with the same base I _________ the exponents?

Subtract

When I raise a power to a power I ______________the exponents.

multiply

Anything to the zero power….

One

When a power is raised to a negative exponent, I have to….

Flip it! And make the exponent positive

There are about 100,000,000,000 trillion cells in the human body. Write this amount in scientific notation.

1 x 10 11

The population of the world is about 7 x 10 9 people. Write this value in standard form.

7,000,000,000

. What number (in standard form) is equivalent to 7.31E-6?

The decimal number in scientific notation must follow this rule

Be between 1-10

1.092 x 10 3 in standard?

1092

When I add or subtract exponents I need to make sure that…

The exponents are the same

When the exponents are different I have to…

Make a table

Sarah has about 7.2 x 10 6 hairs on her head. Sarah’s baby sister has about 3.2 x 10 4 hairs on her head. How much hair do they have altogether?

7.232 x 10 6 hairs

The distance from Earth to the sun is 9.3 x10 7 miles. Earth is 2.4 x10 5 miles from to the moon. Is Earth closer to the sun or the moon?

Moon

True or false? When I add in scientific notation I add the exponents.

False

The last step in multiplication and division is..

Simplifying

1.092 x 10 3

2 x 10 8

Carlos divided the exponents instead of subtracting the exponents.

An object weighs 2 x 10 4 lbs. How much does an object 300 times heavier weigh? Write your answer in scientific notation

6 x 10 6 lbs