How To Add Several Fractions

here is a shortcut method for adding fractions.let's start with 1/2 plus 1/3 i call this method the smiley face because you can tellthis looks like a smiley face. the first step is to multiply the two denominators together.2 times 3 equals 6 and next start on the left and cross multiply so 1 times 3 is 3 and moveto the other side and 1 x 2 = 2 and add those together and you get 5/6 pretty simple. addthe fractions 2/5 + 1/3 go with mr. smiley

How To Add Several Fractions, start on the left and cross multiply, 2 x3 = 6 move to the other side and 1 x 5 = 5 and that equals 11/15 and you can't reduceany further. next let's add 3/4 + 2/3 go with the smiley method , there is the smiley fraction,4 x 3 = 12,start at the left and 3 x 3 = 9 , 2 x 4 = 8 and that equals 1712 and thatis an improper fraction which is in it's simplest

form. this method also works with a mixedfraction. let's add the mixed fractions, 21/2 + 31/3. the first thing to do is to go aheadand convert it to an improper fraction. 2 x 2 = 4 + 1 = 5/2, and the other side is 3x 3 =9 + 1 = 10/3. next apply the smiley method. 2 x 3 = 6 and start on the left and 5 x 3= 15 move across, and that is 15, cross multiply again and that becomes 20 which equals 35/6which is an improper fraction and if you would like you 30 by 6 which equals 5 and 5/6 leftover. so the smiley face method works on mixed fractions. thanks for watching and pleasesubscribe to moomoomath. we upload a new math video everyday.