Q&A for How to Find the Reciprocal

It is 1 divided by the squared number.

1/8. Since every whole number is invisibly divided by 1 (in this case, 8/1), you just interchange the numerator and denominator, putting the denominator over the numerator and there is your reciprocal, 8/1. In other words, a reciprocal takes a number a/b and turns it into b/a.

1 / (a+b).

Convert the mixed number into an improper fraction, then find the reciprocal as you normally would.

The number 4 as a fraction is 4/1. To find the reciprocal of a number, the numerator and denominator switch places, so the reciprocal of 4 is 1/4.

The reciprocal of 2.72 is (1 divided by 2.72)=0.367647 to six significant figures.

Some tables do have a column devoted to reciprocals, but not typically reciprocals of decimal numbers. Your best bet is simply to divide the decimal number into 1.

The reciprocal of a negative number is the same as the reciprocal of the positive number, except it's a negative value. For example, the reciprocal of -11 is -1/11.

Both are correct.

1/2. For reciprocating any number, just put it as a fraction and reverse the numerator and denominator. For example, 3 becomes 1/3 ; 97 becomes 1/97 ; 1/23 becomes 23.

It is -1 / 2.45.

(a-b) / R.

It's ¼ x ½ = 1/8.

There is no quick way other than dividing the new denominator into the new numerator.

The reciprocal of a reciprocal is the same thing it was before you flipped it the first time.

A reciprocal in math is a number that you get by inverting another number. If you invert a reciprocal, you get your original number. If you multiply a number by its reciprocal, you get 1.

The reciprocal is 11/10, which when simplified would be 1 1/10 as a mixed fraction.

Exactly the same way you do it with a positive decimal, except there would be a negative sign in front. Thus, the reciprocal of -0.5 is -2.

8/2, or 4.

Convert the decimal to a fraction, and invert it. If you have to express the answer as a decimal, divide the new denominator into the new numerator.

The reciprocal of 2.5 is (1 / 2.5) = 0.4. 1 / 4.0 = 0.25.

To find the reciprocal of a decimal using long division, you should divide 1 by that decimal. Set up the decimal as the divisor and 1 as the dividend. Perform long division to calculate the quotient, which will be the reciprocal. You can continue this process until you reach the desired number of decimal places or the remainder begins to repeat.

The reciprocal of 5 is 1/5. Dividing by 1/5 is the same as multiplying by 5. 1/5 multiplied by 5 is 1. (If the question is what is the reciprocal of the quantity [(5 ÷ (1/5)], it's 1 / [(5)(5)] = 1/25.)

The reciprocal is (4/5) / (1 2/5). That equals (4/5) / (7/5) = 4/7.

14/4.7 = 140/47 = 2.9787. You don't need to use the reciprocal to evaluate this.

3.02 = 302 / 100. The reciprocal is 100 / 302 = 50 / 151 (which could be expressed as 0.331).

Take the reciprocal of the second number and multiply it by the first number: 1/2 ÷ 1/4 = (1/2)(4/1) = 4/2 = 2. (This question is really asking "how many 1/4's will fit into 1/2?" The answer is 2.)

5 2/8 = 42/8. The reciprocal of 42/8 is 8/42 or 4/21.

The reciprocal is 12/37, which won't reduce.

1 / π = 1 / (3.14159) = 0.31831 (or approximately 0.3).