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Number Sense Videos 30 videos

CAHSEE Math 1.1 Number Sense
743 Views

CAHSEE Number Sense: Drill Set 1, Problem 1. How would he write the number in scientific notation?

CAHSEE Math 1.2 Number Sense
382 Views

CAHSEE Math Number Sense: Drill Set 1, Problem 2. The decimal 0.000035 can be written in scientific notation as...what?

CAHSEE Math 1.3 Number Sense
453 Views

CAHSEE Math Number Sense: Drill Set 1, Problem 3. Which of the following numbers is the largest?

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CAHSEE Math 1.4 Number Sense 181 Views


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Description:

Number Sense: Drill Set 1, Problem 4. Solve the equation.

Language:
English Language

Transcript

00:03

Here's a boring, unshmoopy question you'll find on an exam somewhere in life...

00:07

Evaluate 13 plus 3 to the fourth times 8 minus 4.

00:12

And here are the potential answers:

00:16

It's a pretty straightforward, multi-step problem... ...we just need to break it up.

00:20

The 13 is just... 13. It can stay put.

00:23

3 to the fourth power is 3 times 3 which is 9 times 3 which is 27 times 3 which is 81.

00:30

Then 8 minus 4 is just 4.

00:32

So you can rewrite the whole thing as 13 plus the quantity 81 times 4...

00:36

...remember, you always favor the fancy stuff like multiplying and dividing ahead of adding

00:40

and subtracting.

00:42

So 81 times 4 is 324 and then we just add 13 and we get 337.

00:47

Answer C. Done-zo.

00:49

By the way, if you're on the dating scene

00:50

and like artistic, sensitive types...

00:52

...we hear this guy just become available.

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