3×5+4= 3×9+5= 1×6+4=2×8+3= 4+7×2= 2+6×7=
(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+)×.