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Numbers and Operations Videos 63 videos

SAT Math 1.1 Numbers and Operations
280 Views

SAT Math 1.1 Numbers and Operations. How many combinations of beverage and cereal can be made?

SAT Math 1.2 Numbers and Operations
219 Views

SAT Math: Numbers and Operations Drill 1, Problem 2. If the masterpiece will be worth $45,055 in five years, what is its worth now?

SAT Math 1.3 Numbers and Operations
190 Views

SAT Math 1.3 Numbers and Operations. x and y must be which of the following?

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SAT Math 1.4 Numbers and Operations 211 Views


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Description:

SAT Math 1.4 Numbers and Operations. Solve the equation.

Language:
English Language

Transcript

00:02

And here's your shmoop du jour...

00:04

What is 1.2 times 10 to the fifth over 2.4 times 10 to the 8th?

00:08

Here are the potential options...

00:12

You're probably reaching for your calculator right now, but no calculator necessary here.

00:16

In order to solve this unholy mess of numbers,

00:20

we need to split it into its parts: 1.2 divided by 2.4 is 0.5.

00:26

Our exponent rules tell us that dividing numbers with exponents

00:30

means subtracting the exponents themselves.

00:34

5 - 8 = -3 and we have 0.5 times 10 to the negative third.

00:41

0.5 times 10 to the negative third is equal to zero-point-zero-zero-zero-five...

00:49

...so (A) is the correct answer.

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