Add the following decimal numbers: $2.45$, $3.78$ and $0.12$.

Step-by-step solution

1. Write the numbers in a column aligning the decimal points.\n\n\begin{aligned} 2.45\\ 3.78\\+0.12\\\hline\end{aligned}
2. Add the hundredths column: $5+8+2=15$; write 5 and carry 1 to the tenths column.
3. Add the tenths column: $4+7+1+1(carry)=13$; write 3 and carry 1 to the units column.
4. Add the units column: $2+3+0+1(carry)=6$.
5. The sum is $6.35$.
6. This is the required answer.

Concept tested: Adding decimal numbers

Published 4 October 2026 · How this solution was prepared and checked