来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/11/09 05:04:48
4.14÷0.23÷0.45 【用递等式计算】 6.5*1.8+7.18 26.3÷0.25*3.4
4.14÷0.23÷0.45
=(4.6-0.46)/(0.23*0.45)
=(20-2)/0.45
=18/0.45
=40
6.5*1.8+7.18
=6.5*(2-0.2)+7.18
=13-1.3+7.18
=20.18-1.3
=18.88
26.3÷0.25*3.4
=26.3*4*3.4
=(25+1.3)*4*3.4
=(100+5.2)*3.4
=340+17.68
=357.68