直接写得数．
| 36×2= |
29×3= |
40×30= |
200×50= |
60×90= |
| 40×300= |
23×300= |
36×20= |
10×450= |
3×220= |
用简便方法计算．
7.26﹣2.38+12.74﹣7.6267÷
÷12.5
×
+×
87×
51×3.2+32×4.9．
用简便方法计算．
125×9×853×45+47×45（7+25）×4．
脱式计算，能简算的要简便．
0.25×9.87×4
0.73×101
97.8×9.9+97.8
76.3×27﹣76.3×17．
用简便方法计算．
19×8×12538+129+71
1900÷4÷2599×78+80．
下面各题怎样算简便就怎样算．
24.68+（6.35﹣4.68）82.9﹣13.68﹣2.324.2×99+4.2
48×1.252.5÷（0.5×0.25）0.065×430+65×0.57．