题型:解答题 脱式计算,能简算要简算.(2.74+2.74+…+2.74共40个)×0.254.5×100.23.2×1.25×2.56.9×3.84+3.84×3.14.8+5.2×0.850.8×(3.2-2.99÷2.3) 查看答案