47+256+53 368﹣152﹣48 25×17×4
2700÷25÷4 125×88 99×41+41
13×75+13×25 125×72 25×(4+8)
(1)9750÷25+75(2)(2.32+1.8)×6.5(3)101×7.8
(4)×
+
(5)
[
﹣(
+
)].
计算下列各题,能简算的要简算.
25%×63+37×101×
﹣
375﹣448÷8×5
[75×(6.9﹣3.72)]÷0.6(+
﹣
)×36
+(
+
)÷
.
(1):x=2
:1.8
(2)[(1.4+1.6×2)×(1÷
﹣2.375)]+2.901
(3)2007×20082008﹣2008×20072007
(4)+
+
+
+…+
.
下面各题,怎样算简便就怎样算.
1080+270÷18﹣8647.54++2.46+
(2.4﹣
)÷0.625+
2.5×12.5×40×0.86﹣÷
﹣
.
下面各题,怎样简便就怎样算.
19.98×37﹣199.8×1.9+1998×0.829999×7+1111×37
[﹣(
﹣
)]×
(70+
)×
.