1 (one, unit, unity) is a number, numeral, and glyph. It is the first and smallest positive integer of the infinite sequence of natural numbers.

One (1) is the first natural number, followed by two. The Roman numeral for one is I.

Educational video for children to learn the number 1. The little ones will learn how to trace number 1, how to pronounce it and also how to count with a seri...

Enter a problem... Step 1: Enter the expression you want to evaluate. The Math Calculator will evaluate your problem down to a final solution. You can also add, subtraction, multiply, and …

Use the basic math calculator to do simple calculations or use one of the following calculators. This is a free online math calculator together with a variety of other free math calculators that …