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# How do you write 21.9 in scientific notation?

Updated: 12/12/2022

Wiki User

12y ago

Scientific Notation is another form of writing a large number (actually..any number)

The first number must be less than 10, while the second number has to be 10 to any power.

21.9 in scientific notation would be...... 2.19 X 10^1

**10^1 = 10...

2.19 X 10 = 21.9

the first number is less than ten

the second number is ten to the first degree

Wiki User

12y ago

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Q: How do you write 21.9 in scientific notation?
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