What is the term used for simplifying fractions diagonally when multiplying?

The term used for simplifying fractions diagonally when multiplying is cross cancellation. This process involves reducing a fraction before carrying out the multiplication, which makes calculations easier and more efficient. When two fractions are multiplied, you can look for common factors in the numerator of one fraction and the denominator of the other fraction. By "cross cancelling," you divide these common factors out, simplifying the fractions before they are multiplied together.

This method is particularly advantageous because it reduces the size of the numbers you're working with, making it less likely to make computational errors. The focus on this technique is crucial in fraction multiplication as it not only streamlines the process but also helps in grasping the fundamental concept of factors and multiples, which are key in understanding more complex mathematical operations.

The other terms, while related to simplifying fractions, do not specifically refer to the diagonal process during multiplication. For instance, cancelling factors is a broader term and can apply to situations outside of multiplicative contexts, while fraction reduction and simplifying fractions generally refer to the overall process of making fractions simpler without the specific diagonal aspect.