Large and small numbers are often written using powers of 10 instead of writing out all the zeros. For example, the number 100 can be written as 10².
In this expression:
- 10 is called the base.
- 2 is the exponent (or power), which tells us how many times to multiply the base by itself.
So, 10² means 10 × 10, which equals 100.
We say this as “ten to the power of two.”
Scientific Notation:
In scientific notation, numbers are written in the form:
m×10n
Where:
- m is a number between 1 and 10 (not including 10).
- n is an integer (can be positive or negative), indicating the power of 10.
For example:
4,000,000 is written as: 4×106