Basic Rules Since there are only 9 numbers and a zero we count in groups of 10. • Ten Units make a TEN, • Ten Tens make a HUNDRED . • Ten Hundreds make a THOUSAND. X X X ????????X? Thousand Hundred Ten Units The first seven place values are UNITS, TENS, HUNDREDS, THOUSANDS,TEN-THOUSANDS,HUNDRED-THOUSANDS, and MILLIONS. In any number the value of a digit depends upon its position • The 4 in 41 stands for four Tens • The two in 42 stands for two Units • The value of the digit 5 in 452 is five Tens, because it is in the tens column. The following Number can be written as 54321 = 54 X 1000 + 3 X 100 + 2 X 10 + 1 X 1 since • The 54 in 54321 stands for 54 Thousands • The 3 in 54321 stands for 3 Hundreds • The 2 in 54321 stands for 2 Tens • The 1 in 54321 stands for 1 Units The number 54,321 says fifty four thousand, three hundred and twenty one ?