if i cross multiply 1/2*4/22 what will i get.... just really need an example

You can't cross-multiply two fractions. It doesn't mean anything. You cross-multiply when you have an equation with fractions, as in

2/3 = 8/12
Then you multiply the left by thr right-side denominator, and vice-versa:

2*12 = 3*8
24 = 24

It's a handy way of getting rid of fractions. What you are really doing is putting everything all over a common denominator, without keeping it around.

2/3 = 8/12
LCD = 36, so

2*12/3*12 = 8*3/12*3
24/36 = 24/36
and you just toss the 36 away, since it no longer affects anything. If two fractions with the same denominator have equal numerators, then they are equal.

If you just want to multiply fractions, your question about

1/2 * 4/22 = (1*4)/(2*22) = 4/44 = 1/11
or, since 1/2 of 4 is 2,
1/2 * 4/22 = 2/22 = 1/11

To cross multiply two fractions, you need to multiply the numerators of the fractions together and then multiply the denominators together.

Let's apply this to the example you provided: 1/2 * 4/22.

First, multiply the numerators together: 1 * 4 = 4.

Next, multiply the denominators together: 2 * 22 = 44.

So, when you cross multiply 1/2 and 4/22, you get 4/44.

To simplify the result, you can divide both the numerator and the denominator by their greatest common divisor, which is 4 in this case.

Dividing the numerator by 4, you get 4 ÷ 4 = 1.
Dividing the denominator by 4, you get 44 ÷ 4 = 11.

Therefore, the result of 1/2 * 4/22 after simplification is 1/11.