ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Pre-Algebra Videos 36 videos

ACT Math 5.4 Elementary Algebra
313 Views

ACT Math: Elementary Algebra Drill 5, Problem 4. How old is Thalia?

ACT Math 1.2 Pre-Algebra
891 Views

ACT Math: Pre-Algebra Drill 1.2. What proportion of Jenna's day is spent Wii-swimming?

ACT Math 2.2 Pre-Algebra
421 Views

ACT Math Pre-Algebra: Drill 2, Problem 2. Solve for y.

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
1939 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
3230 Views

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

ACT Math 3.1 Intermediate Algebra
1955 Views

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

ACT Math 3.1 Plane Geometry
2559 Views

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

Compound Interest
45304 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...