0.9 = 9/10
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In a unit fraction, the numerator is always the number 1. 9/10 cannot be written as a unit fraction.
17
1 unit = 10 tenths so 4.7 = 4.7*10 = 47 tenths.
Well, darling, there are 19 tenths in 1.9. You see, the number after the decimal point tells you how many tenths there are. So in this case, 1.9 means one whole number and nine tenths. Math can be a piece of cake when you have a sassy assistant like me!
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