Quick, what’s 36% of 25? Or how about 250% of 20? Learn a quick tip to help you calculate all of those pesky percentages in your head.
36% of 25 is the same as 25% of 36.
How does this help?
Well, 25% (or 1/4) of 36 is a whole lot easier to figure out.
In other words: 36/4 which equals 9
25% of 36 must b
36%
of 25 is the same as 25% of 36. How does that help us? Well, since 25%
is the same as the fraction 1/4, we see that 25% of 36 must be 36/4 or
9. So 25% of 36 is equal to 9, and 36% of 25 must also be 9. - See more
at:
http://www.quickanddirtytips.com/education/math/how-to-quickly-calcu
AND SO . . . . 36% of 25 is 9. Pretty cool, huh?250% of 20? Easier to do if you flip it.
20% of 250.
Because 10% is so easy to figure out, I always tell myself that 20% is 10% twice or . . . . 25 + 25 which is 50.
AND SO . . . . 250% of 20 is 50. Pretty cool again.
Math Tricks are fun!
http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages
t’s
helpful to take a minute to see why this seemingly magical trick works.
As I mentioned before, 36% is equivalent to the fraction 36/100. Since
we can write the fraction 1/100 as the decimal number 0.01, we see that
the fraction 36/100 can also be written 0.01 x 36. That means that 36%
of 25 must be equal to (0.01 x 36) x 25. Now here comes the cool part:
The associative property of multiplication tells us that we can multiply
several numbers in any order we’d like. Which means that (0.01 x 36) x
25 = (0.01 x 25) x 36. But 0.01 x 25 is the same thing as 25%, which
means that this is equal to 25% of 36. So 36% of 25 is equal to 25% of
36. It ain’t magic, it’s math! Pretty cool, right? - See more at:
http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages#sthash.eIOccEFG.dpuf
t’s
helpful to take a minute to see why this seemingly magical trick works.
As I mentioned before, 36% is equivalent to the fraction 36/100. Since
we can write the fraction 1/100 as the decimal number 0.01, we see that
the fraction 36/100 can also be written 0.01 x 36. That means that 36%
of 25 must be equal to (0.01 x 36) x 25. Now here comes the cool part:
The associative property of multiplication tells us that we can multiply
several numbers in any order we’d like. Which means that (0.01 x 36) x
25 = (0.01 x 25) x 36. But 0.01 x 25 is the same thing as 25%, which
means that this is equal to 25% of 36. So 36% of 25 is equal to 25% of
36. It ain’t magic, it’s math! Pretty cool, right? - See more at:
http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages#sthash.eIOccEFG.dpuf
36%
of 25 is the same as 25% of 36. How does that help us? Well, since 25%
is the same as the fraction 1/4, we see that 25% of 36 must be 36/4 or
9. So 25% of 36 is equal to 9, and 36% of 25 must also be 9.
The beauty of this trick is that every time you’ve solved one problem, you’ve actually solved two! And that’s especially useful when one of the problems is much easier to solve than the other—as was the case here.
- See more at: http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages#sthash.eIOccEFG.dpuf
The beauty of this trick is that every time you’ve solved one problem, you’ve actually solved two! And that’s especially useful when one of the problems is much easier to solve than the other—as was the case here.
- See more at: http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages#sthash.eIOccEFG.dpuf
36%
of 25 is the same as 25% of 36. How does that help us? Well, since 25%
is the same as the fraction 1/4, we see that 25% of 36 must be 36/4 or
9. So 25% of 36 is equal to 9, and 36% of 25 must also be 9.
The beauty of this trick is that every time you’ve solved one problem, you’ve actually solved two! And that’s especially useful when one of the problems is much easier to solve than the other—as was the case here.
- See more at: http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages#sthash.eIOccEFG.dpuf
The beauty of this trick is that every time you’ve solved one problem, you’ve actually solved two! And that’s especially useful when one of the problems is much easier to solve than the other—as was the case here.
- See more at: http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages#sthash.eIOccEFG.dpuf
36%
of 25 is the same as 25% of 36. How does that help us? Well, since 25%
is the same as the fraction 1/4, we see that 25% of 36 must be 36/4 or
9. So 25% of 36 is equal to 9, and 36% of 25 must also be 9.
The beauty of this trick is that every time you’ve solved one problem, you’ve actually solved two! And that’s especially useful when one of the problems is much easier to solve than the other—as was the case here.
- See more at: http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages#sthash.eIOccEFG.dpuf
The beauty of this trick is that every time you’ve solved one problem, you’ve actually solved two! And that’s especially useful when one of the problems is much easier to solve than the other—as was the case here.
- See more at: http://www.quickanddirtytips.com/education/math/how-to-quickly-calculate-percentages#sthash.eIOccEFG.dpuf
