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Start with 23500000 or 23,500,000.0

See the decimal point? Move the decimal point to the left until there's only ONE number to the left of it.

Count the number of times the decimal is moved to the left:

23,500,00.0 (1 move)

23,500,0.00 (2 moves)

23,500.000 (3 moves)

23,50.0000 (4 moves)

235.00000 (5 moves)

23.500000 (6 moves)

2.3500000 (7 moves)

The decimal point was moved 7 places to the left, so your new answer is the "number" part (2.35) multiplied by 10 to the 7th power, or:

2.35 x 107

Really big numbers have a positive exponent at the end

Really small numbers have a negative exponent at the end

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Q: How do you write 23500000 in scientific notation?
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