kidzsearch.com > wiki Explore:web images videos games
Reciprocal
KidzSearch Safe Wikipedia for Kids.
(Redirected from Multiplicative inverse)
In mathematics, the reciprocal (or multiplicative inverse) of a number is 1 divided by the number, or equivalently, the number raised to the power of 1 (as in [math]\tfrac{1}{x}[/math] and [math]x^{1}[/math]).^{[1]}^{[2]} All numbers have a reciprocal except zero, since no number times 0 is 1. Two numbers are reciprocal of each other if and only if their product is 1.^{[3]} For example:
 2.5 and 0.4 are reciprocals, because 2.5 × 0.4 = 1.
 0.2 and 5 are reciprocals, because 0.2 × 5 = 1.
 1 and 1 are their own reciprocals, because 1 × 1 = 1 and 1 × 1 = 1.
To find the reciprocal of a fraction, swap the numerator and the denominator. Whole numbers can be thought as having a denominator of 1.^{[2]} For example:
 The reciprocal of 8 is 1/8 (or 0.125).
 The reciprocal of 5/3 is 3/5 (or 0.6).
 The reciprocal of 1/7 is 7.
 The reciprocal of 9/4 is 4/9.
Dividing a fraction is the same as multiplying its reciprocal and vice versa.
Related pages
References
 ↑ "Compendium of Mathematical Symbols" (in enUS). 20200301. https://mathvault.ca/hub/highermath/mathsymbols/.
 ↑ ^{2.0} ^{2.1} "Reciprocal". https://www.mathsisfun.com/reciprocal.html.
 ↑ Weisstein, Eric W.. "Reciprocal" (in en). https://mathworld.wolfram.com/Reciprocal.html#:~:text=Two%20numbers%20are%20reciprocals%20if,number,%20the%20smaller%20its%20reciprocal..
