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Math Prezi Andrea
Transcript of Math Prezi Andrea
Math Vocabulary defenitions
Dividend: A dividend is the number that is being divided.
Prime number: A prime number is a number that has no positivemdivisor one and itself
Composite number: A composite number is a number that has at least one positive dividor other than one or the numer itself.
Example number: 24
What are the factors of 48
Multiples of 14
14, 28, 42, 56, 70, 84, 98,
2: the divisibility rule for two is to always end on the numbers 0,2,4,6,8
3: the divisibility rule for three is that you have to add the numbers and if they give you a number that you can find in the multiplication table of 3.
4: you take the number and you take the last two digits of the number and then you divide it by 4 and if you can find it in the multiplication table then is it divisable by 4
5:if the last digit number ends on 0 or 5
6: if the number can be divided by 2 and 3
9: If you add up the numbers and it is a multiple of 9
10: If it only ends on 0
When you do a factor tree the first thing you need to do is get the number that you got, (the number I'm using is 24) and get the factors that eaquals that number, for example 6x4 equals 24. then you put two lines down the 6 like a triangle the you put whitch number eaquals it like, 3x2 then you put two lines again like a triangle down the 4 and you put what it eaquals number 4. You only put the two lines when you multiply numbers that have factors or if not you just put a strate line. You are going to have something like this, 24. when you have that you are done.
6 x 4
/ \ x / \