甲箱有桔子100个,乙箱有桔子80个,从甲箱取出多少个桔子放到乙箱后,甲、乙两箱桔子的比是7:11?
4.56×0.27+483×0.0456+1.9×4.56+0.456×304﹣(﹣+) X﹣0.4X﹣1.2=13.2+++.
用简便方法计算. 7.09×98+7.09×2 82×++ 25×1.25×32×+×.
脱式计算,能简算的要简算 22.3﹣2.45﹣5.3﹣4.55 [43.3×(2﹣75%)+7]× , .
计算.能简算的要简算. 25×1.25×32(3.75+4.1+2.35)×9.812×(+﹣) (+)÷+10÷[﹣(÷+)].
下面各题,怎样算简便就怎样算. 111×3÷9÷7.40.125×103﹣12.50.56×0.7+0.07×5.6.