2. Learning Outcomes
• To know the difference between Binary and
Decimal
• To be able to convert basic numbers between
binary and decimal
• To understand what base-10 means
3. Base 10
Base 10 number systems use the digits 0 to 9.
The value of each digit is defined by the location
of that digit within the number.
For Example: 642 =
6 x 100
+ 4 x 10 + 2 x 1
600
+ 40
+2
4. Positional Notation
There is another way to write the numbers in
Decimal base 10. The positional notation form
shows how many times the base number has been
timed by itself.
This can be displayed as follows.
6 x 102 = 6 x 100 = 600
+ 4 x 101 = 4 x 10 = 40
+ 2 x 10º = 2 x 1 = 2 = 642 in base 10
