计算下列各题,能简算的要简算.89×4+×+0.24×6.4÷0.326﹣×﹣.
①25.74﹣2.36﹣7.64 ②0.75×0.25×4③8.4÷0.25÷4 ④2.8×3.6+1.4×2.8.
96×101.
48×201.
能巧算的要巧算.(1)7.2×1.25(2)9.9×26(3)36.7÷25(4)19.25﹣6.25÷2.5(5)19.12÷0.8+3.4.
563+286+237.