Q: How do you write 20.9 million in standard form?

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209.03

209.03

209 and 3/100 is 209.03 as a decimal and in standard form it is 2.0903*10^2

209 + 300 = 509

Writing a number in standard form simply means to express the number in its 'normal' form. Therefore, your example is written in standard form as: 209.03

209 is an integer: it is neither a fraction nor a mixed number.

2.09 = 209/100 which cannot be simplified.

209 hundredths = 209/100 = 2.09

two hundred nine thousand, one hundred six

209/100 as a decimal is 2.09

that is the lowest form 209/400

2.09 in expanded form is (2 x 1) + (0/10) + (9/100)