$1+\frac{1}{2}+\frac{1}{4}+\frac{1}{10}=$

1.85

The correct answer is Option (4) → 1.85

1. Convert fractions to decimals

Each fraction can be easily converted into a decimal value:

• $1$ is a whole number.
• $\frac{1}{2} = 0.5$
• $\frac{1}{4} = 0.25$
• $\frac{1}{10} = 0.1$

2. Add the values together

Now, we simply sum these decimal values:

$1 + 0.5 + 0.25 + 0.1$

• $1 + 0.5 = 1.5$
• $1.5 + 0.25 = 1.75$
• $1.75 + 0.1 = 1.85$

Alternative Method: Common Denominator

If you prefer working with fractions, the least common multiple of $2, 4,$ and $10$ is 20.

$\frac{20}{20} + \frac{10}{20} + \frac{5}{20} + \frac{2}{20} = \frac{20 + 10 + 5 + 2}{20} = \frac{37}{20}$

Dividing $37$ by $20$:

$37 \div 20 = 1.85$

Conclusion

The total sum is 1.85.