巧算:5.6×7.2×20.4÷2.8÷3.6÷5.1

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/17 01:40:22
巧算:5.6×7.2×20.4÷2.8÷3.6÷5.1巧算:5.6×7.2×20.4÷2.8÷3.6÷5.1巧算:5.6×7.2×20.4÷2.8÷3.6÷5.15.6×7.2×20.4÷2.8÷3.

巧算:5.6×7.2×20.4÷2.8÷3.6÷5.1
巧算:5.6×7.2×20.4÷2.8÷3.6÷5.1

巧算:5.6×7.2×20.4÷2.8÷3.6÷5.1
5.6×7.2×20.4÷2.8÷3.6÷5.1
=(5.6÷2.8)×(7.2÷3.6)×(20.4÷5.1)
=2×2×4
=16

5.6×7.2×20.4÷2.8÷3.6÷5.1=(5.6÷2.8)×(7.2÷3.6)×(20.4÷5.1)=2×2×4=16

原式=1.4×4×3.6×2×5.1×4÷1.4÷2÷3.6÷5.1=4×4=16