1/5 + 1/5 + 1/10
need common denominator to add fractions; 10 looks good and 1/5 = 2/10
2/10 + 2/10 + 1/10
= 5/10
which is...........
= 1/2
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They add up to 4/5
1/3 plus 1/5 plus 4/10 = 0.933333
2/5 plus 1/5 minus 3/10 is equal to 0.3 or 3/10
"fifth".
Yes, one fifth and one tenth are fractions.