两箱苹果,甲箱苹果个数与乙箱苹果个数的比是5:3,如果从甲箱拿出14个放入乙箱,甲箱与乙箱苹果个数的比是1:2,原来两箱各有多少个苹果?
计算:19.58×66+22×91.26= . 64×12.5×0.25×0.05= .
2.89×4.68+4.68×6.11+4.68.
1+12.7+5.9+17.3270﹣42.5﹣17.5125×88130÷25÷4 25×32×125125×103﹣125×322.4×25﹣25×2.4.
直接写出得数: 0.4×0.25=7.8×9.9=0.5×3.81×2= 56.42÷7=0.8÷0.01=9.3÷6÷0.5=
计算.(能简算的要写出简算过程) ①4.52+0.61+1.39+6.48 ②4.27﹣(1.96﹣1.73) ③(294.4﹣19.2×6)÷(6+8) ④12.5×0.76×0.4×8×2.5.