Two fifths.
To find what to add to two-fifths to make one, you can set up the equation: ( \frac{2}{5} + x = 1 ). Subtracting ( \frac{2}{5} ) from both sides gives you ( x = 1 - \frac{2}{5} = \frac{5}{5} - \frac{2}{5} = \frac{3}{5} ). Therefore, you need to add three-fifths to two-fifths to make one.
3/5+6/10 is 1.2 or 1 2/10
1/5.
Anything divided by itself is 1.
1 9 25
They add to: 4 and 1/5
1 fifth and 2 fifths
2 1/6
7 and 1/5
3/5+6/10 is 1.2 or 1 2/10
1/5
1
0.25
1/5.
Anything divided by itself is 1.
(3/5)+(3/5)+(3/5) = 9/5 = 1 and 4/5
3/5 + 1/8 = 24/40 + 5/40 = 29/40