1.5×4= 2.5×4 = 0.13× 4= 2.4-0.8= 4.2×1000= O .75+0.8 = 8.5×100= 0.18×0.3= O .04×25= 1000×0.756= 0.5×100= 2.5×1.47×0.4= 1.25×8= 3.8×2= 1.6×0.2= 2.5x3 3.1x5 2.1x9 8.9x20 6.8x3 5.5x5 2.5x4 ...应用题有么对不起没有