下面的三个图形都是从4×4的正方形纸片上剪去两个1×1的小方格后得到的. 问：能否把它们分别剪成1×2的七个小矩形.
×80% 1﹣78% 100﹣56%
÷40%
60%×70% 8.7×45% 1+1% 25×．
1.2+20%+
×90% 8×（1+25%） 80%÷．
口算
15÷0.25= 1.5×
=
×1.8= 2.5×0.4= 32×2.5=
24×
= 2.4+1.6=
÷
=
×
=
÷25%=
直接写得数．
2.4×50%=
+
= 5.8﹣0.89= 0.52=
÷10= 3.9×1.1=（
+
）×12= 1﹣
+
=
3.26+2.4=
=
= 3.6÷0.6=
1﹣0.52= 2.5×3.5×0.4=
=
=
直接写得数：
×0.87=
÷1.2=
÷
= 0.56×
= 2006﹣619=
6﹣
= 3.2×
= 0.3×0.4= 2.85+1.5= 73.05﹣3.96=
=
=
= 1÷
×
= 7×
÷7×=