2First I’m going to tell you, what are fractions First I’m going to tell you, what are fractions? A fraction is a number that can represent part of a whole.Example:38
31 5 Next I’m going to show you what are nominators and denominators Numerators are the numbers on top15Denominators are the numbers below
4Now I’m going to tell you how to add fractions. You might think this is how you add fractions.7184939But it is actually like this793949You don’t add the denominator
5Now I’m going to tell you how to subtract fractions. You might think this is how you subtract fractions.13949But it is actually like this193949Like adding, you don’t do anything to the denominator
63 4 I’m going to tell you what are prime numbers. Prime Numbers is a whole number greater than 1 that has exactly two factors, 1 and itself.You may wondering “then what are the other numbers” well the other numbers are called composite numbers.Composite numbers are whole numbers greater than 1 that has more than two factors.compositeExample:prime34
7How do you find prime and composite numbers? Step:3Keep doing it to the ones that are not crossedHere is one way you can find prime and composite numbers.1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980Step:1Cross out number 1 since is not a prime numberStep4: The ones that are circled they are prime and the ones crossed they are compositeStep:2Circle 2 and then cross out all of its multiples81828384858687888990919293949596979899100
8Here is another way you can find if a number is prime or composite x919x33You have to see how many tables could you do with the numberIf you find 2 or more ways to multiply it, it is a composite number and if you only find one is a prime.