1.列竖式计算。
•306×6= •705×5= •901×9= •606×6=

•402×9= •505×7= •801×2= •107×8=

•403×2= •106×5= •307×3= •505×4=

306×6=1836
$\begin{array}{r} 306\\ ×\quad _{3}6\\ \hline 1836\end{array}$
705×5=3525
$\begin{array}{r} 705\\ ×\quad _{2}5\\ \hline 3525\end{array}$
901×9=8109
$\begin{array}{r} 901\\ ×\quad 9\\ \hline 8109\end{array}$
606×6=3636
$\begin{array}{r} 606\\ ×\quad _{3}6\\ \hline 3636\end{array}$
402×9=3618
$\begin{array}{r} 402\\ ×\quad _{1}9\\ \hline 3618\end{array}$
505×7=3535
$\begin{array}{r} 505\\ ×\quad _{3}7\\ \hline 3535\end{array}$
801×2=1602
$\begin{array}{r} 801\\ ×\quad 2\\ \hline 1602\end{array}$
107×8=856
$\begin{array}{r} 107\\ ×\quad _{5}8\\ \hline 856\end{array}$
403×2=806
$\begin{array}{r} 403\\ ×\quad 2\\ \hline 806\end{array}$
106×5=530
$\begin{array}{r} 106\\ ×\quad _{3}5\\ \hline 530\end{array}$
307×3=921
$\begin{array}{r} 307\\ ×\quad _{2}3\\ \hline 921\end{array}$
505×4=2020
$\begin{array}{r} 505\\ ×\quad _{2}4\\ \hline 2020\end{array}$

2.脱式计算。
• $0×106+177$
• $3×207-256$
• $105×6-111$
• $714-205×3$
• $403×2+452$
• $786-2×206$
• $203×4+188$
• $104×5-132$
• $202×4+158$
• $864-3×209$
• $205×6+108$
• $307×6-898$

$0×106+177$
$=0+177$
$=177$
$3×207-256$
$=621-256$
$=365$
$105×6-111$
$=630-111$
$=519$
$714-205×3$
$=714-615$
$=99$
$403×2+452$
$=806+452$
$=1258$
$786-2×206$
$=786-412$
$=374$
$203×4+188$
$=812+188$
$=1000$
$104×5-132$
$=520-132$
$=388$
$202×4+158$
$=808+158$
$=966$
$864-3×209$
$=864-627$
$=237$
$205×6+108$
$=1230+108$
$=1338$
$307×6-898$
$=1842-898$
$=944$