ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Number Sense Videos 30 videos
Number Sense: Drill Set 2, Problem 5. By what percent did his percentage grade increase from one test to the other?
Number Sense: Drill Set 3, Problem 1. This is a decrease of, approximately, what percent?
Number Sense Drill 3 Problem 3. How much interest will Warren have earned in three years?
CAHSEE Math 1.3 Number Sense 453 Views
Share It!
Description:
CAHSEE Math Number Sense: Drill Set 1, Problem 3. Which of the following numbers is the largest?
Transcript
- 00:03
Here's a boring, unshmoopy question you'll find on some exam somewhere in life...
- 00:08
Which of the following numbers is the largest:
- 00:10
Here are the potential answers...
- 00:19
So... in this scientific notation problem, there are a few we can rule out real quick.
- 00:24
Note that A and B are taken to the NEGATIVE power of 2...
Full Transcript
- 00:27
...which means that they are small numbers...
- 00:30
...even though in A's case, it starts out with a big fat 12 to the left of the decimal.
- 00:34
That negative exponent means there's going to be some shrinkage.
- 00:40
So that leaves us with C and D.
- 00:43
In this case, both are only 10 squared, which we know is 100.
- 00:48
So for C, we have 1.23 x 100, which is just 123.
- 00:53
And in option D, 0.123 times 10 squared means that we shift the decimal two places to the
- 01:00
right to get 12.3.
- 01:02
So C is bigger and yep, that's the answer.
- 01:06
Now if you'll excuse us, we're going to try consoling options A and B.
- 01:10
They have positive exponent envy.
Related Videos
CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.
We don't like knocking people down to size, but we do like simplifying radicals. Join us?
If fleeing criminals always fled the scene of the crime at perfect right angles, it would be much easier to determine their whereabouts. Fortunatel...
Okay, so this probably isn't going to help you master Pokemon Go, but game theory can be applied to all sorts of situations. Even stomping your old...