Math Problem Solver

$$1000 + 2000=3000$$

$$\begin{aligned} \mathtt{1}\mathtt{0}\mathtt{0}\mathtt{0}\\ \mathtt{+\phantom{0}}\mathtt{2}\mathtt{0}\mathtt{0}\mathtt{0}\\ \hline \mathtt{3}\mathtt{0}\mathtt{0}\mathtt{0} \end{aligned}$$

$0$ is the digit in the $10^{0}$ place. $0 \times 10^{0} + 0 \times 10^{0} = 0 \times 10^{0}$.

$0$ is the digit in the $10^{1}$ place. $0 \times 10^{1} + 0 \times 10^{1} = 0 \times 10^{1}$.

$0$ is the digit in the $10^{2}$ place. $0 \times 10^{2} + 0 \times 10^{2} = 0 \times 10^{2}$.

$3$ is the digit in the $10^{3}$ place. $1 \times 10^{3} + 2 \times 10^{3} = 3 \times 10^{3}$.