use math and divide 360 by 18
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When something is cut into equal pieces, (think of a pie), the pieces are larger the fewer pieces there are. If the pie is cut in half, that is an entire HALF of the pie one has to eat. But if the pie is cut into three equal pieces, there are more pieces, but they are smaller. So, one fourth of the pie would be even smaller because you are getting ONE piece of a pie that is cut into FOUR pieces. The bottom number of the fraction is how many equal sized pieces there are, and the top number is how many you are getting.
In a fraction you are looking at parts of a whole, thus if you think of this as a pie and the lower number as the number of pieces the pie has been cut into. the top number of pieces you intend to remove or work with. thus your query of what does 2/3 equal... If you cut each piece of pie into another equal piece then the answer 4/6 is correct. the denominator is the lower number or the total number of pieces that the pie is cut up into. the numerator is the number of pieces you plan to work with or eat...
No. One third is 1/3 and one ninth is 1/9. A ninth is much smaller, three thirds is equal to one ninth - 3/9=1/3. Another way to look at it is like a pie. If you cut one pie into three pieces and one pie into nine and took a piece from each. The piece that you took from the pie cut into three would be much bigger, and equal to three pieces of the pie you cut into nine.
The best way to think about equivalent fractions is that they are fractions that have the same overall value. Equivalent fractions represent the same part of a whole. For example, if we cut a pie exactly down the middle, into two equally sized pieces, one piece is the same as one half of the pie. And if another pie (the same size) is cut into 4 equal pieces, then two pieces of that pie represent the same amount of pie that 1/2 did. So we can say that 1/2 is equivalent (or equal) to 2/4.
If you've bought 4 pieces of pie, then you want it cut into the fewest possible number of pieces. Go to the pie that was cut into only 6 pieces, not the one that was cut into 11 pieces.