1. (8 points) The calculation result of the expression $210 \times 6-52 \times 5$ is $\qquad$
【Solution】Solve: $210 \times 6-52 \times 5$
$$
\begin{array}{l}
=1260-260 \\
=1000
\end{array}
$$

Therefore, the answer is: 1000.