SAT Math 4.1 Numbers and Operations

SAT Math 4.1 Numbers and Operations

LanguageEnglish Language
Numbers and OperationsProperties of Integers
Pre-AlgebraProperties of Numbers
Problem Solving and Data AnalysisLinear and exponential
Product TypeSAT Math
Properties of NumbersIntegers
SAT MathNumbers and Operations

Transcript

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."