1.列竖式计算。（带☆的要验算）
• 652−35=
−
• 629−80=
−
• 892−49=
−
• 817−53=
−
• 282−158=
−
• 443−127=
−
• 698−439=
−
• 438−241=
−
• 526−48=
−
• 415−28=
−
• 531−492=
−
• 322−294=
−
• 306−158=
−
• 502−297=
−
• 702−226=
−
• 304−178=
−
☆600−258= 验算：

☆408−259= 验算：

652−35=617
$\begin{array}{r} 6\dot{5}2\\ -\ \ 35\\ \hline 617\end{array}$
629−80=549
$\begin{array}{r} \dot{6}29\\ -\ \ 80\\ \hline 549\end{array}$
892−49=843
$\begin{array}{r} 8\dot{9}2\\ -\ \ 49\\ \hline 843\end{array}$
817−53=764
$\begin{array}{r} \dot{8}17\\ -\ \ 53\\ \hline 764\end{array}$
282−158=124
$\begin{array}{r} 2\dot{8}2\\ -158\\ \hline 124\end{array}$
443−127=316
$\begin{array}{r} 4\dot{4}3\\ -127\\ \hline 316\end{array}$
698−439=259
$\begin{array}{r} 6\dot{9}8\\ -439\\ \hline 259\end{array}$
438−241=197
$\begin{array}{r} \dot{4}38\\ -241\\ \hline 197\end{array}$
526−48=478
$\begin{array}{r} \dot{5}\dot{2}6\\ -\ \ 48\\ \hline 478\end{array}$
415−28=387
$\begin{array}{r} \dot{4}\dot{1}5\\ -\ \ 28\\ \hline 387\end{array}$
531−492=39
$\begin{array}{r} \dot{5}\dot{3}1\\ -492\\ \hline 39\end{array}$
322−294=28
$\begin{array}{r} \dot{3}\dot{2}2\\ -294\\ \hline 28\end{array}$
306−158=148
$\begin{array}{r} \dot{3}\dot{0}6\\ -158\\ \hline 148\end{array}$
502−297=205
$\begin{array}{r} \dot{5}\dot{0}2\\ -297\\ \hline 205\end{array}$
702−226=476
$\begin{array}{r} \dot{7}\dot{0}2\\ -226\\ \hline 476\end{array}$
304−178=126
$\begin{array}{r} \dot{3}\dot{0}4\\ -178\\ \hline 126\end{array}$
☆600−258=342 验算：
$\begin{array}{r} \dot{6}\dot{0}0\\ -258\\ \hline 342\end{array}$ $\begin{array}{r} \dot{6}\dot{0}0\\ -342\\ \hline 258\end{array}$
☆408−259=149 验算：
$\begin{array}{r} \dot{4}\dot{0}8\\ -259\\ \hline 149\end{array}$ $\begin{array}{r} 259\\ +_{1}1_{1}49\\ \hline 408\end{array}$

2.将下面的表格补充完整。