A **number** is a mathematical object used to count, measure, and label. The original examples are the natural numbers1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers can be represented by symbols, called *numerals*; for example, “5” is a numeral that represents the number five. As only a relatively small number of symbols can be memorized, basic numerals are commonly organized in a numeral system, which is an organized way to represent any number. The most common numeral system is the Hindu–Arabic numeral system, which allows for the representation of any number using a combination of ten fundamental numeric symbols, called digits. In addition to their use in counting and measuring, numerals are often used for labels (as with telephone numbers), for ordering (as with serial numbers), and for codes (as with ISBNs). In common usage, a *numeral* is not clearly distinguished from the *number* that it represents. http://wikepedia.org

- Numbers and Counting I (Naming Numbers)
- Numbers and Counting II (Counting using objects)
- Numbers and Counting III (Counting using objects)
- Numbers and Counting IV (Practice Counting)
- Numbers and Counting V (Practice Counting)
- Numbers and Counting VI (Practice Counting)
- Numbers and Counting VII (Missing Numbers)
- Numbers and Counting VIII (Counting by 2’s, 5’s and 10’s)
- Numbers and Counting IX(Counting by 2’s, 5’s and 10’s backwards)
- Numbers and Counting X (Odd and Even Numbers)

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