Let's reduce: $\frac{1}{4}+\frac{1}{10}$

ⓘ To add fractions, put them over the same denominator, then add the numerators. We choose $20$, the least common multiple of $4$ and $10$. Multiplying the numerator and the denominator by the same number does not change the fraction: $\frac{1}{4}+\frac{1}{10}$ = $\frac{1\times 5}{4\times 5}+\frac{1\times 2}{10\times 2}$ = $\frac{1\times 5+1\times 2}{4\times 5}$ = $\frac{5+2}{4\times 5}$

$\frac{5+2}{4\times 5}$

ⓘ The numerator and the denominator are computed before the division: $5+2$ = $7$

ⅰ $4\times 5$ = $20$

▶Simplified form:   $\frac{7}{20}$

The numeric value of: $\frac{7}{20}$ equals:

▷ $0.35$