计算下面各题.(能简算的要简算) (1)40.5÷0.5+10.75 (2)213.6÷0.8÷0.3 (3)39.22÷3.7×2.5 (4)1.25×2.5×32 (5)0.24×103 (6)13.7×5+6.3×5.
(1)40.5÷0.5+10.75, =81+10.75, =91.75; (2)213.6÷0.8÷0.3, =267÷0.3, =890; (3)39.22÷3.7×2.5, =10.6×2.5, =26.5; (4)1.25×2.5×32, =(1.25×8)×(2.5×4), =10×10, =100; (5)0.24×103, =0.24×100+0.24×3, =24+0.72, =24.72; (6)13.7×5+6.3×5. =(13.7+6.3)×5, =20×5, =100. |