ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Basic Operations Videos 58 videos

Operations with Rational Expressions
8687 Views

It's impressive that these expressions are able to stay so rational even when they're having operations performed on them.

Numbers and Operations: Elementary Number Theory
606 Views

Jack and Jill went up the hill to fetch a pail of water. But what happened when they got up there? They’ve been gone an awfully long time…

SAT Math 7.3 Algebra and Functions
318 Views

SAT Math 7.3 Algebra and Functions

See All

SAT Math 1.4 Numbers and Operations 211 Views


Share It!


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.

Related Videos

SAT Math 2.1 Geometry and Measurement
2779 Views

SAT Math 2.1 Geometry and Measurement. What is the measure of angle z in terms of x and y?

SAT Math 9.4 Algebra and Functions
1300 Views

SAT Math 9.4 Algebra and Functions

SAT Math 9.2 Algebra and Functions
377 Views

SAT Math 9.2 Algebra and Functions

SAT Math: Identifying an Equation for the Average of Two Percentages
23 Views

In 2014, the unemployment rate of one county in California was 7%. In another county, the unemployment rate was 11%. Which of the following express...

SAT Math: Which Equation Represents Profit?
13 Views

Angela is making cookies for a bake sale. She expects each batch of her cookies to sell for $40. It costs her $10 to make one batch of cookies, and...