来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/10 10:20:37
递等式计算 0.75×18÷0.15 2.07÷0.23÷0.45 21.36÷0.8
递等式计算
0.75×18÷0.15
2.07÷0.23÷0.45
21.36÷0.8-12.9
7.28+3.2÷2.5
0.75×18÷0.15
= 0.75÷0.15×18
=3×18
= 54 再答: 2.07÷0.23÷0.45
=9÷0.45
=20
再答: 21.36÷0.8-12.9
=26.7-12.9
=13.8
再答: 7.28+3.2÷2.5
=7.28+1.28
=8.56