Plus one Units and Measurement

Order of Magnitude

Large and small numbers are written as power of ten in scientific notation. If the number is more than five then it's order of magnitude is power of ten plus one If the number is less than five the power of ten is it's magnitude.

Example
1)Find the order of magnitude of 4.62 ×103
Here the number 4.62 is less than five ∴ the order of magnitude is 3
2)Find the order of magnitude of 5.32 ×106
Here the number 5.32 is more than five ∴ the order of magnitude is 6+1=7
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