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Playlist Numbers and Operations Test Questions 29 videos
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 1.5 Numbers and Operations. How many dots would be in the 5th term of this sequence?
SAT Math 2.1 Numbers and Operations. How many dots will be in the 6th term of this sequence?
SAT Math 3.1 Numbers and Operations 198 Views
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Description:
SAT Math 3.1 Numbers and Operations
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.
Full Transcript
- 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!
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