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SAT Math 4.2 Numbers and Operations 316 Views
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Description:
SAT Math 4.2 Numbers and Operations
Transcript
- 00:02
Here's an unshmoopy question you may find on an exam somewhere in life...
- 00:06
Order the following values from least to greatest: 0.55, forty seventy-fifths, 53%, five-ninths
- 00:16
And here are the potential answers...
- 00:20
It just wants us to order all the numbers form least to greatest.
- 00:22
HOW we go about ordering them is less obvious,
Full Transcript
- 00:25
since we can't really compare a fraction to a decimal.
- 00:28
The easiest way to go about things is to convert everything to a decimal.
- 00:32
Lucky for us, 0.55 is already a decimal. 53% is the same thing as fifty-three one-hundredths.
- 00:39
Divide 53 by 100 to get the decimal 0.53. Now for the fractions. First up is five-ninths.
- 00:47
Dividing 5 by 9 gives us a decimal of 0.555555.
- 00:53
We saved the best for last: forty seventy-fifths.
- 00:57
Dividing 40 by 75 gives us 0.53333.
- 01:03
Let's write out all the numbers side by side in decimal form.
- 01:06
Order all the numbers from least to greatest and we have...
- 01:09
0.53, 0.53333, 0.55, 0.55555
- 01:14
Here are the least to greatest.
- 01:16
So, E is our answer.
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