0.9×6= 1.5×0.4= 0.15×0.3=
0.24×2= 3.6×0.2= 0.8×0.6=
1.7×0.2= 0.15×4= 0.23×0.3=
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．