209.106 = (2 x 100) + (0 x 10) + (9 x 1) + (1/10) + (0/100) + (6/1000)
Two hundred nine and one hundred six thousandths.
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3.4 can be written as: (3 x 1) + (4/10) orthree and four tenths.
To write 2.9 in expanded form, you would express it as 2 + 0.9. In word form, 2.9 would be written as "two and nine tenths."
3.142 in expanded form and word form = (3 x 1) + (1/10) + (4/100) + (2/1000) or three and one hundred forty-two thousandths.
17+0.0002
10+.02+.002