Vertical Addition: Addition of 3-digit and 2-digit numbers with some regrouping beyond 1000

$\begin{aligned} &653 \\ +& \\ &399 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

1052

$\begin{aligned} &273 \\ +& \\ &899 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

1172

$\begin{aligned} &999 \\ +& \\ &185 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

1184

$\begin{aligned} &346 \\ +& \\ &965 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

1311

$\begin{aligned} &716 \\ +& \\ &427 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

1143

$\begin{aligned} &877 \\ +& \\ &656 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

1533

$\begin{aligned} &986 \\ +& \\ &757 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

1743