Ones and tens are the place values used in the decimal number system to represent numbers. Let[SQ]s break them down :

*

Ones (or Units):

This place value represents the single units of a number. It[SQ]s the rightmost digit in a number. It shows how many single items you have.

*

Examples:

* In the number 23, the "3" is in the ones place, meaning there are three ones.
* In the number 105, the "5" is in the ones place, representing five ones.
* In the number 9, the "9" is in the ones place, indicating nine ones.


*

Tens:

This place value represents groups of ten. It[SQ]s the second digit from the right. It shows how many tens you have.

*

Examples:

* In the number 23, the "2" is in the tens place, meaning there are two tens (or twenty).
* In the number 105, the "0" is in the tens place, meaning there are zero tens.
* In the number 78, the "7" is in the tens place, representing seven tens (or seventy).

Putting it together:

Let[SQ]s look at the number 37:

* The "7" in the ones place represents seven ones.
* The "3" in the tens place represents three tens (or thirty).

Therefore, 37 is equal to thirty-seven (3 tens + 7 ones).


In short, the ones and tens places work together to build larger numbers by representing quantities in groups of one and groups of ten respectively. This system continues with hundreds, thousands, and so on, building upon this fundamental concept of place value.