step by step
2 + 2 x 5 x 6 x 8 x 7 is the algorithm for that
Multiply straight across and cross reduce when necessary
definition of multiplying fractions?
it is euclidean algorithm...
Multiplying fractions is all about division
LCD
When multiplying fractions the algorithm to use is: multiply the numerators and multiply the denominators to create a new fraction. Thus 3/8 * 3/5 = (3*3)/(8*5) = 9/40.
The algorithm is A/B * C/D = AB/CD.
Fractions and decimals are usually rational numbers. Besides, multiplying rational and irrational numbers is also similar.
When multiplying 2 fractions, we multiply the two numerators together and the two denominators together.
The answer to this question depends on the multiplication algorithm you are working with. If you are working with an algorithm for multiplying fractions, the answer of why it works the way it does is going to be different than if you are multiplying whole numbers. If you are looking to explain multiplication algorithms to young children (and even to explain algorithms to older children or to better understand them yourself), it is useful to use physical objects and play with multiplication. Once you work out a few of the type of problem you are doing (or a scaled down version if you are working with large numbers) it will likely become clearer to you why it works the way it does.
Fractions aren't really difficult, once you understand them. Mainly, you have to memorize when to use which operation, so that you don't get adding and multiplying fractions confused, for example.