Topic Content:
- Counting in Base 10 (Decimal)
- Counting in Groups of Twos (Binary)
- Decimal Vs. Binary
- Types of Number Systems
Counting in Base 10 (Decimal):
The usual system of counting is called the decimal or denary system.
“dec “means ten which means our usual decimal system is in Base 10.
In Base 10 we have digits for the numbers 0 – 9. We do not have a single digit for ten.
We saw in the previous lesson that the Romans had a single character for 10 which is X.
In Base 10, we write 10 for the number ten, but this stands for 1 ten and 0 ones. This is two digits; we have no single solitary digit that stands for “ten”.
We count in Base 10 like this:
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