Name Underlined Place
Introduction
When you are dealing with large numbers, it can be difficult to work out which digit corresponds to which value. For example, in the number 491,289,729, which place is the 8 in?
If one of the numbers is underlined, and you need to work out its value, you can use a number table to help you quickly find out.
Terms
Lesson
Let's take the example listed in the introduction above:
491,289,729
If we underline one of the digits in the number, we can work out the value of that place:
49++1++,289,729
Now, we can use a number table to help us order all of the digits. A number table is a useful tool for helping us work out the value of each column. We can use the number table below:
| Hundred Millions | Ten Millions | Milions | Hundred Thousands | Ten Thousands | Thousands | Hundreds | Tens | Ones |
|---|---|---|---|---|---|---|---|---|
We can plug the numbers into our number table. When you fill in a table, start on the furthest right in the ones column, then the tens, then the hundreds and so on. This will prevent you from having an empty space on the right.
| Hundred Millions | Ten Millions | Milions | Hundred Thousands | Ten Thousands | Thousands | Hundreds | Tens | Ones |
|---|---|---|---|---|---|---|---|---|
| 4 | 9 | ++1++ | 2 | 8 | 9 | 7 | 2 | 9 |
Because our underlined number is in the millions column, we know straight away that it is one million (or 1,000,000).
If we need to create a number table for a number with decimals, we can add extra columns to the right (just remember to put the decimal point in) and then follow exactly the same process.