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CAHSEE Math 6.3 Number Sense 171 Views
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Description:
Number Sense: Drill Set 6, Problem 3. Of all the absolute values of the following numbers, which would be the greatest?
Transcript
- 00:03
And here's your shmoop du jour.
- 00:07
Of all the absolute values of the following numbers, which would be the greatest?
- 00:12
Here are the potential answers...
- 00:14
Before we spoil the ending and kill all the drama... why not hit pause and try to solve this one yourself first?
- 00:20
OK, this question is just testing whether
Full Transcript
- 00:22
we can use a number line and do some simple conversions...
- 00:26
...er, these conversions...
- 00:28
...and that we know what absolute value means.
- 00:35
To refresh our memories... absolute value is just the quantity of units of any number
- 00:39
from 0 on the number line.
- 00:42
Doesn't matter whether we're going in a positive or negative direction -- it's
- 00:45
only about how far we travel. So let's start by just converting these
- 00:49
numbers into decimals, so they'll fit.
- 00:52
Look through the potential answers.
- 00:53
A is -1 tenth, or -.1, and it goes here on the line.
- 00:58
But since it's only the absolute value we care about, we'll put it on the positive side.
- 01:03
B is negative .05, but on the positive side of the line it goes here --
- 01:08
and is clearly less than .1.
- 01:11
C is .02 and goes here and yeah, if you haven't figured it out by now, we can ignore the minus signs.
- 01:18
And finally we have D at .01 and it goes here.
- 01:21
So the answer is A.
- 01:23
Point one is furthest away from the origin and has the biggest absolute value.
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