直接写得数.
8.2﹣1.98= 3.7÷0.25= 3.5+2.7+16.5=
5.4﹣0.5﹣1.4= 9.6×0.5= 3.74÷0.2÷0.5=
计算下面各题,能简算的要简算.
(1)12.5×19.95×0.4(2)÷
.
3.7×7.3+7.3×6.3.
(1)0.35﹣10﹣(0.2+6.37÷0.7)×0.5(2)91×+9÷13﹣1÷13×100
(3)(﹣
)×17﹣
(4)53.5×1.9+61×1.25+41×8.1
(5)12×[( +
)÷
](6)
×
+56×
+
×
.
(1)2.7×2.75+6.3×2.75+2;(2)1﹣(3
﹣2
÷1
)×
;(3)999×778+333×666.
计算,能简便的要简算.
(1)7.15+110÷(3.2×2.3)(2)
(3)(4)1+2﹣3﹣4+5+6﹣7﹣8+9+…+1993
(5)(6)6÷[1÷(2.1﹣2.09)].