1.8 as a mixed number is 1⁴/₅.
Writing 1.8 is the same as writing 1.8 / 1 because every whole number is divided by 1.
Now that it is in that form:
= 1.8 / 1
You can expand it by multiplying both numbers by 10:
= (1.8 x 10) / ( 1 x 10)
= 18 / 10
Take this to the simplest form:
= (18 / 2) / (10 / 2)
= 9 / 5
Now convert to mixed:
= 9 / 5
= 1 remains 4
= 1⁴/₅
In conclusion, 1.8 in mixed fraction is 1⁴/₅.
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