There are many numerals developed by humans for the past years. The most common numeral that we are using today is called the Hindu-Arabic numerals. This numerals uses the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 to represent numbers. There are other numerals like the Roman numerals, Greek numerals and Cuneiform numerals

To form a number/s we combine one or more of the numerals. An example using Hindu-Arabic numerals are 2, 25, 856, 6658.

Reminders:
• we can create as many digit as possible.
• The higher the digit the larger the number. So 111 is greater than 99, 1252 is greater than 999.
• We cannot start a number with 0. Example 056 is just the same as 56 or 00056 = 56.

There are many classifications of numbers, a whole number is just one of them. These are numbers that starts from 0 up to the largest number possible (0, 1, 2, 3, ...). These numbers doen't include fractions or decimals.

A Place Value is a numerical value of a digit in a number based on its position. In whole numers the place values are ones (units), tens, hundreds, thousands, ten thousands, hundred thousands, millions, ten millions, hundred millions, billions, ten billions and so on.

Placing the place value of a number starts from right to left from ones, tens and so on and the rightmost place value in a number has the smallest value.