4.2×0.26 4.8÷0.75 630÷45 简便计算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/12 01:57:38
4.2×0.26 4.8÷0.75 630÷45 简便计算
4.2×0.26 4.8÷0.75 630÷45 简便计算
急…………急
4.2×0.26 4.8÷0.75 630÷45 简便计算
急…………急
![4.2×0.26 4.8÷0.75 630÷45 简便计算](/uploads/image/z/2629986-42-6.jpg?t=4.2%C3%970.26+4.8%C3%B70.75+630%C3%B745+%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
4.2×0.26=(4+0.2)×0.26=1.04+0.052=1.092
4.8÷0.75=4.8÷(3/4)=4.8×(4/3)=6.4
630÷45=630÷(9×5)=630÷9÷5=70÷5=14
4.8÷0.75=4.8÷(3/4)=4.8×(4/3)=6.4
630÷45=630÷(9×5)=630÷9÷5=70÷5=14