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A reciprocal is useful to know in math because to divide fractions, you must multiply by the second fraction's reciprocal. For example:

2/3 divided by 4/7

is the same as

2/3 times 7/4.

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โˆ™ 2011-02-17 02:56:11
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Q: Why is it useful to know what a reciprocal is in math?
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Related questions

What does reciprocal mean in math terms?

What does reciprocal mean in fractions

What is the math term for reciprocal?

The multiplicative inverSe

Why do you teach math?

Math is very useful. You may not realize it but you are always using math. From counting how many eggs to cook or paying for something you'll always need it. I personally don't love math but i know it will be extremely useful in my future.

What math is in banking?

Interest and percent I know. Proportions are useful for finding that.

What is a sentence for reciprocal?

-My teacher likes for us to use math terms, such as reciprocal, in class.

Does an organic chemist need to know math?

yes, math is useful. But you probably won't need higher then 1st year calc

What does flip mean in math?

Flip is the technical term for a reciprocal. (The reciprocal of 3/4 is 4/3)

Why is the commutative property useful in math?

Math sucks c:

What is receprocal in math?

The reciprocal of a number is: 1 divided by the number. Example: the reciprocal of 2 is 1/2 and 5 is 1/5..

What is the definition of receprocal in a math term?

The reciprocal is the "multiplicative inverse". This means 1 divided by the number. The reciprocal of 2 is 1/2, the reciprocal of 5 is 1/5, etc.

What is a reciprocal in math fractions?

A reciprocal is when you take the second fraction in a division problem and flip it Then change the sign to multiply. THIS ONLY WORKS WHEN YOU ARE DIVIDING FRACTIONS!

What does 1over a mean in math?

1/a is the reciprocal of a

How is math useful in science?

FormulasMath is useful in science because you might want to make a graph, or you might have to measure things, or add amounts, and so much more. Math is really useful if you are a scientist.

What is the reciprocal of 2x?

Reciprocal in math means to flip a number. 2x can also be expressed as 2/1 (2 over 1) x. So the reciprocal of 2x is 1/2 (one over two) x.

Are there any Math words that begin with the letter R?

Remainder: Remainder is what you have left after dividing a number. Reciprocal: This is the multiplicative inverse of any number(ex. the reciprocal of 5 = 1/5 and the reciprocal of 4/5 = 5/4).

How is math useful to a roofer?

it is help

What is the reciprocal of one and three sevens?

if you want to do on your own look in you math book reciprocals in the index you will find fast but , depends on what kind of math book you have .

What technology is useful in math class?


What is a flipped fraction called?

When the numbers within a fraction are reversed, this is called a reciprocal. A reciprocal is useful when dividing fractions - dividing by a fraction is the same as multiplying by its reciprocal.For example, 4 / 2/3 = 4 x 3/2 = 6.

Why is division simply multiplying the dividend by the reciprocal of the divisor?

That's how division is formally defined in advanced math.

What is a math reciprocal?

a recipricol of a fraction is the fraction flipped over, with the numerator in the denominators place and vice versa.

What does inveres mean in math problems?

Usually the same as reciprocal. The inverse of 3/4 is 4/3

What is the reciprocal function of sin a?

Since sin(a)=opposite/hypotenuse, the reciprocal function is that function which is equal to hypotenuse/opposite. This is "cosecant", or csc(a). The reciprocal of sin(a) is csc(a). I will solve all your math problems. Check my profile for more info.

If a fraction is less than 1 what do you know about its reciprocal?

Its reciprocal is either less than 0 or greater than 1.

What is the definition of a negative reciprocal?

Negative reciprocal is something you use in math that often times help you find a perpendicular line to an equation. ex: for an equation with a slope of 5x, the recriprocal would be -1/5x. what you do is you flip flop the bottom and the top, 1/5x. That is the reciprocal alone and to make it a negative reciprocal you just simply add the negative sign.

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