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# When do you use cross multiplication?

Updated: 4/28/2022

Wiki User

14y ago

When comparing or simplifying fractions.

Wiki User

14y ago

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Q: When do you use cross multiplication?
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### What is the correct term for cross multiplication?

Cross multiplication IS the correct term!

### Is cross reduction a math word?

Cross reduction does exist. We use it when we want to make large multiplication fractions simpler =)

### What does Cross multiplication mean?

Cross multiplication is when you multiply the denominator of a fraction by the numerator of another fraction. Before you cross multiply you want to see if you can simply the fractions.

Maths!

### What is the inherent meaning and justification of cross-multiplication as it applies to solve an inequality?

What is the inherent meaning and justification of cross-multiplication as it applies to solving an inequality

### Which operatoins are not commutative?

Subtraction, division, cross multiplication of vectors, multiplication of matrices, etc.

### How do you use proportions using cross multiplication to find 2.80?

2.80 is 2.80: you do not need to ise proportions or anything to "find" it!

### How do you solve an equation using unit rates with variablesWhat steps do I needDo I use cross multiplication?

The answer will depend on the detailed nature of the question.

### Is two fourths equal to three sixths?

yes...to know if it is equal use cross multiplication..if the answer is the same as the product of the denominetor to the numerator,it is equal

x/6=7/12

### What is the answer when you use multiplication?

The answer to a multiplication question is called the "Product".

### Is three fourths more one half?

Yes it is. If you use cross multiplication, 3/4 equals 6, while 1/2 equals 4.