Well, to cross multiply them, you multiply the numerator in the first fraction times the denominator in the second fraction, then you write that number down. Then you multiply the numerator of the second fraction times the number in the denominator of your first fraction, and you write that number down.
How do you do Criss Cross fractions?
The Criss Cross Method
- Multiply the numerator of the first fraction (1/2) by the denominator of the second fraction (3/4): 1 x 4 = 4.
- Multiply the numerator of the second fraction (3/4) by the denominator of the first fraction (1/2): 3 x 2 = 6.
- Multiply the denominators of both fractions (1/2 & 3/4) together: 2 x 4 = 8.
What is the formula of cross multiplication method?
However, the method of cross multiplication is applicable only when we have a pair of linear equations in two variables. Consider that a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 are two equations that need to be solved. By the method of cross-multiplication, we would find the values of the x and y variables.
