ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Numbers and Operations Videos 63 videos

SAT Math 1.1 Numbers and Operations
280 Views

SAT Math 1.1 Numbers and Operations. How many combinations of beverage and cereal can be made?

SAT Math 1.2 Numbers and Operations
219 Views

SAT Math: Numbers and Operations Drill 1, Problem 2. If the masterpiece will be worth $45,055 in five years, what is its worth now?

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?

See All

SAT Math 3.1 Numbers and Operations 198 Views


Share It!


Description:

SAT Math 3.1 Numbers and Operations

Language:
English Language

Transcript

00:02

Here’s your shmoop du jour, brought to you by Missing Terms.

00:06

There’s a reward being offered for their return; unfortunately, the amount is an irrational number.

00:12

Find the missing term in the sequence: 5, 2.5, 1.25, blank and 0.3125.

00:19

And here are the potential answers...

00:22

The question is asking us to divine a number in a sequence... which means there's a pattern here.

00:28

Yeah, kinda like this. But with numbers.

00:30

Let's take a look at each term and compare one term to another to find the pattern.

00:34

To get from Term 1 to Term 2, or from 5 to 2.5, we divide T1 by 2.

00:42

To get from Term 2 to Term 3, we divide 2.5 by 2 to get 1.25.

00:48

The pattern is to divide each term by 2 to get the next successive term.

00:51

So… to get from Term 3 to Term 4, the unknown term we're looking for, all we need to do

00:56

is divide again: 1.25 divided by 2 = 0.625. Boom.

01:03

Looks like our answer is (A)! And…we’re done!

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...