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Ten More or Ten Less than a Number
To find 10 more than a number, add 1 to the digit at the tens place.
To find 10 less than a number, subtract 1 from the digit at the tens place.
For example: Let's find 10 less than the number 47.
This number can be written in the place value table as:
| Tens | Ones |
| 4 | 7 |
Notice that there are four tens in the number 47.
| Tens | Ones |
|
4
|
7
|
To find 10 less than 47, subtract 1 from the digit at its tens place.
4 – 1 = 3
| Tens | Ones |
| 3 | 7 |
So, 10 less than the number 47 is 37.
