How To Find Unit Digit?

Short tutorial on how to find unit digit of a number.

How To Find Unit Digit Of A Number?

"Unity" means one, so the units digit is the digit in the ones column. A short tutorial to learn how to calculate the unit digit of the number with simple examples.

Eg. for the number 237, the 2 is in the hundreds column, the 3 is in the tens column and the 7 is in the ones column. So, the unit digit for the number 237 is 7.
Finding the unit digit of any number is based on the place value chart.

Place Value Chart:


As shown in the figure above, the unit digit of the number 2342395 is 5. As number 5 is in the ones column which is the Unity.

Likewise, if you want to find unit digit of any numbers just fill in the columns in the place value table.

Few Examples:
1) How to find unit digit of a number 8596.
By using the place value chart, we know that 8 is in the thousands column, 5 in hundreds column, 9 in tens column and 6 in ones column. Hence the unit digit of a number 8596 is 6.

2) How to find unit digit of a number 2³
2³ = 2 x 2 x 2 = 8
Where 8 is in the ones column and hence the unit digit of 2³ is 8.

Unit Digit of any Integer with Integer Powers are as follows,
1 = Always 1
2 = 2, 4, 8, 6 repeats
3 = 3, 9, 7, 1 repeats
4 = 4 , 6 repeats
5 = Always 5
6 = Always 6
7 = 7, 9, 3, 1 repeats
8 = 8, 4, 2, 6 repeats
9 = 9, 1 repeats
10 = always 0

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