Solve the following addition problems:

$$456 + 782 = 1238$$

The sum is $\boxed{1238}$.

$$976 + 876 = 1852$$

The sum is $\boxed{1852}$.

$$546 + 333 = 879$$

The sum is $\boxed{879}$.

$$678 + 674 = 1352$$

The sum is $\boxed{1352}$.

$$656 + 674 = 1330$$

The sum is $\boxed{1330}$.

$$674 + 583 = 1257$$

The sum is $\boxed{1257}$.

$$586 + 946 = 1532$$

The sum is $\boxed{1532}$.

$$785 + 744 = 1529$$

The sum is $\boxed{1529}$.

$$656 + 343 = 999$$

The sum is $\boxed{999}$.

$$845 + 742 = 1587$$

The sum is $\boxed{1587}$.