2/5 + 3/12 = 24/60 + 15/60 = 39/60 = 13/20 = 0.65
Wiki User
∙ 12y agoWe convert this to twelfths to give: 10 twelfths + 4 twelfths + 9 twelfths = 23 twelfths or 1 and 11 twelfths.
One fourth is three twelfths. So one twelfth plus three twelfths is four twelfths, which is also one third.
six tenths or three fifths
three fifths plus one quarter = 17 twentieths
3 5/8 + 5/12 is 4 1/24.
5
7 4/5
They would have to convert to same denominators to add. So that would be 8 twelfths plus three twelfths. And that is eleven twelfths. 0.916666667
13 and 1 fifth
Seven-twelfths
this is the same as 3 holes and 8 twelfths plus 1 hole and 3 twelfths = 4 and 11 twelfths
3/4
five twelfths
We convert this to twelfths to give: 10 twelfths + 4 twelfths + 9 twelfths = 23 twelfths or 1 and 11 twelfths.
The sum is 23/30
twelve and four twelfths
four fifths is equal to eight tents, so three tenths plus eight tenths is eleven tenths, or one and one tenth