2 × 2 × 2 = 2³ (2 cubed).
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Exponential notation is a useful way of writing big numbers. Exponential notation means "to the power of...". For example: 24 means 2x2x2x2 (2 times itself three times) 10^8 (another way of writing exponential notation) means 100000000 (1 with 8 zeros after it).
Exponential notation for 400 would be 4 * 10 ^ 2.
If you write it as 1010, you already have exponential notation. If you want scientific notation, you might want to add "1" in front of it, to get: 1 x 1010. In exponential shorthand notation, used a lot in computers, this would be written as 1e10.
It is: 2 times 7^4 = 4802
What is the exponential notation for 0.000981