# Do you use and when writing numbers?

## Do you use and when writing numbers?

When writing out a number of three or more digits, the word and is not necessary. However, use the word and to express any decimal points that may accompany these numbers.

## What is cardinality example?

The cardinality of a set is a measure of a set’s size, meaning the number of elements in the set. For instance, the set A = { 1 , 2 , 4 } A = \{1,2,4\} A={1,2,4} has a cardinality of 3 for the three elements that are in it.

**What is cardinal value?**

A Cardinal Number says how many of something, such as one, two, three, four, five, etc. Example: here are five coins: It does not have fractions or decimals, it is only used for counting.

**Is zero an ordinal number?**

It is argued that zero should be considered as a cardinal number but not an ordinal number. One should make a clear distinction between order types that are labels for well-ordered sets and ordinal numbers that are labels for the elements in these sets.

### How do you use ordinal numbers in a sentence?

When we want to put things in order, we use ordinal numbers so we can tell the position of that thing. For example, if there is a road with three houses, you will pass them in order of the first house, the second and the third. In the following sentences, spell the ordinal number in full to complete the sentence.