17.9
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Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there are 2 numbers to the right of the decimal point, place the decimal number over 10 2 ( 100 ) . Next, add the whole number to the left of the decimal. 2 66 100 Reduce the fractional part of the mixed number. 2 33 50
9 and 1/10 is a mixed number. As a decimal, that is written 9.1
10 and nine tenths can be written as a decimal as 10.9. When converting a decimal to a mixed number, the whole number part remains the same, and the decimal part becomes the fractional part. In this case, 10.9 is equivalent to 10 and 9/10 as a mixed number.
77/10 is already in its simplest form As a mixed number its is 7 and 7/10 As a decimal it is 7.7
10.9 is a decimal which can also be written as 10 and 9/10