ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Math Videos 320 videos

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?

SAT Math 2.4 Numbers and Operations
384 Views

SAT Math 2.4 Numbers and Operations

See All

SAT Math 4.1 Numbers and Operations 230 Views


Share It!


Description:

SAT Math 4.1 Numbers and Operations

Language:
English Language

Transcript

00:02

Put this in your calculator and shmoop it...

00:05

When an integer is multiplied by itself four times, the result can be...

00:08

I. Positive II. Negative III. Equal to zero

00:11

And here are the potential answers...

00:16

So what is this question asking?

00:18

In short... it's testing our number sense.

00:26

Let's start with a positive number.

00:28

The easiest number to choose is 1.

00:30

Multiply 1 by itself 4 times... and we get 1.

00:33

Now let's try a negative number.

00:35

We're going to be insanely creative and pick... negative 1.

00:38

Multiply it by itself 4 times and we get...

00:42

-1 times -1... that's positive 1. Times -1 is negative 1. Times -1 again is positive 1.

00:52

Now we know that both the positive and negative cases will give us a positive answer.

00:57

We've only got one number left to try. Multiply by 0.

01:01

0 by 0 by 0 by 0... it's just 0

01:04

Never going to be anything different.

01:06

When we tested these three cases, we saw that

01:08

the only possible outcomes were a positive number or 0.

01:12

The answer is B. As in, "Boo."

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...