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CAHSEE Math 5.5 Number Sense 206 Views
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Description:
Number Sense: Drill Set 5, Problem 5. Between which two integers does the square root of 80 lie?
Number Sense: Drill Set 5, Problem 5. Between which two integers does the square root of 80 lie?
Transcript
- 00:03
Here's your shmoop du jour...
- 00:06
Between which two integers does the square root of 80 lie?
- 00:10
Okay here are the potential answers...
- 00:13
Before we spoil the ending and kill all the drama... why not hit pause and try to resolve it yourself first?
- 00:21
So... this is kind of a forcibly brute-forced problem.
Full Transcript
- 00:25
In other words, there isn't some magic formula we can use to solve this puppy.
- 00:29
What we do know is that there are perfect squares in and around 80 that'll make life easier.
- 00:35
That is... we know that 8 squared is 64 and that 9 squared is 81.
- 00:40
HOW do we know that?
- 00:41
Well, all those years we spent working on our multiplication tables are really paying off now.
- 00:47
And that's... it.
- 00:48
Just glance the answers, and select choice B. Done.
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