Video instructions and help with filling out and completing Why Form 8815 Index

Instructions and Help about Why Form 8815 Index

I brought it to prime factors in index form when I say to express 300 is the product of its prime factors in index form you've got to divide by prime numbers so the first thing you're thinking of more the prime numbers a prime number is a number that only one in itself go into so the prime numbers would be 2 3 5 7 11 13 17 19 etc there's only one in itself and what my little tips would be if it's here on I'm gonna divide by 2 so I'm gonna start by dividing by 2 so I'm right 300 in the middle and I know cuz I see even even means it ends in a 2 4 6 8 or 0 I divided by 2 so what I'm doing is 1/2 in 300 1/2 of 300 half of 30 is 15 and I got an extra 0 so half of 301 hundred and fifty right that is even as well so at the right da by 2 so what I'm gonna do I'm gonna divide that 150 by 2 I'm half of 150 all right if you don't know how to do that 2 goes into 150 two good into 15 7 times 1 left over and then 2 into 10 five times so that becomes 75 fast not even so I can't divide by 2 so what I'm gonna divide by now is you got a choice you can either add up the digits EV not 5 is 12 because 12 is in the 3 times table I can divide by 3 so I'm gonna divide it by 3 and I'll do on the side how many threes and 75 how many threes and 7 2 3 6 1 left over only threes and 15 5 so 3 goes into 75 25 cents and now any prime numbers going to 25 she won't find a 7 so 3 doesn't go into it cuz Sam isn't in the 3 times table but I know 5 5 is 25 so 5 5 to 25 so my answer then I write through your nuts all these little circles next to each other so 2 times 2 times 3 times 5 times 5 and then in index form if you remember how to write an index form I got to 2 so write the 2 to the 2 I go 1 3 and I got two fives an ass Express and the product of its prime factors in index form