直接写得数.
204+583=11﹣=
﹣
=0.56×
=
÷
=
2.6×0.25×4=3×=62=求比值:
:
=化简比:6:0.75=
怎样简便就怎样算.
2.5×32×12.58×5×(﹣
)4.63+3
+5.37+7
×[(
﹣
)÷
]17×
﹣
1.25×(
)
0.8+4+
+5
2.05﹣0.81÷2.7×4.510.625×2005+2005×
﹣2005
÷(1
﹣
×
)+
8
÷[4.6+1
×(4
﹣1.15)]9.8﹣(
+2.4×2
)
57.5﹣4.25﹣15.75125×32×16.31﹣
×2.31
99×0.76×0.25+
×0.24
×0.8+
×80%+
×
.
+
÷
73÷
﹣37×
1÷(15﹣
﹣
)
÷[(
+
)×
].
用递等式计算,能简算的要简算
14×75﹣624÷39(7.6﹣3.6÷2)×1.516×1024.68×78+4.68×22.