1.2 Place value
Converting expressions into numbers
It is necessary to know how to convert English expressions into numbers.
For example, the expression “one million, five hundred and sixty thousand, two hundred and eight” means 1,560,208.
The position of a digit is its place value. Place value is counted from the very right hand side. The first number from the right is the unit, then the tens, then the hundreds, then the thousands, then the ten thousands, then the hundred thousands, then the millions, then the ten millions, etc.
For example, the place value of “9″ in 583,029 is in the units position, so the place value is “9″.
In 583,092, now the “9″ is in the tens position, so the place value is “90″.
In 583,902, now the “9″ is in the hundreds position, so the place value is “900″.
Note the digit 0 doesn’t ever have a place value.
For example, in 583,902, the place value is “0″, even though it is in the tens position, NOT “00″.
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