ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Math Videos 1247 videos

Compound Interest
45296 Views

Who wants to be a millionaire? In this video, learn about compound interest, interest rates, and the compound interest formula. You'll be buying th...

ACT Math 5.2 Pre-Algebra
1938 Views

ACT Math: Pre-Algebra Drill 5, Problem 2. If a and b are prime numbers, how many factors does ab have?

Simplifying Radicals
9738 Views

We don't like knocking people down to size, but we do like simplifying radicals. Join us?

See All

ACT Math 2.4 Pre-Algebra 461 Views


Share It!


Description:

ACT Math: Pre-Algebra Drill 2, Problem 4. Which of the following numbers is largest?

Language:
English Language

Transcript

00:03

A little birdie told us you wanted to shmoop a math problem...

00:08

Which number is largest? And here are the potential answers...

00:15

OK, this question is just asking whether or not we have mastered The Number Line.

00:19

The answer is going to be somewhere in the "7"s area ...around here...so this is where it's gonna live.

00:25

To get the answer, we just zip through the choices one by one.

00:29

First we have the absolute value of negative 7, which is just... 7.

00:33

7 and 3/8 -- ok, so we need to decimalize and we divide 8 into 3.

00:40

So three divided by 8 is 0.375... so 7.375. So it lives here.

00:49

7.5 is already decimalized for us. Woot. It lives here.

00:53

OK, now we have 7 and 1/12 -- well... just looking at this number, we don't need to

00:59

go through the hassle of doing the math.

01:01

We know 1/12 is less than 1/8, which we just did, and this one will be even smaller...

01:06

...so let's just punt it.

01:08

And lastly, we have 4/9 -- well... we know 4/8 is one-half, right?

01:13

But here we have 4/9, so we know it'll be LESS than a half...

01:17

or smaller than the 7.5 number here.

01:20

We don't have to blast out the math here either.

01:22

The largest is 7.5... and the answer is C.

01:25

As in, "Chewbacca's feeling left out."

Related Videos

ACT Math 5.2 Pre-Algebra
1938 Views

ACT Math: Pre-Algebra Drill 5, Problem 2. If a and b are prime numbers, how many factors does ab have?

Inequalities in Number Lines
3227 Views

ACT Math: Coordinate Geometry Drill 1, Problem 1. Which inequality is expressed by the number line?

ACT Math 3.1 Intermediate Algebra
1954 Views

ACT Math: Intermediate Algebra: Drill 3, Problem 1. Find the fifth number in the series.

ACT Math 3.1 Plane Geometry
2558 Views

ACT Math: Plane Geometry Drill 3, Problem 1. What is the area of the trapezoid shape in the video?

Compound Interest
45296 Views

Who wants to be a millionaire? In this video, learn about compound interest, interest rates, and the compound interest formula. You'll be buying th...