简便计算:8.57-2.47+3.43+5.47

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 14:20:47
简便计算:8.57-2.47+3.43+5.47简便计算:8.57-2.47+3.43+5.47简便计算:8.57-2.47+3.43+5.478.57-2.47+3.43+5.47=8.57+3.4

简便计算:8.57-2.47+3.43+5.47
简便计算:8.57-2.47+3.43+5.47

简便计算:8.57-2.47+3.43+5.47
8.57-2.47+3.43+5.47
=8.57+3.43+(5.47-2.47)
=12+3
=15

8.57+3.43+(5.47-2.47)=15

8.57-2.47+3.43+5.47
=(8.57 + 3.43) +(5.47 - 2.47)
= 12 + 3
= 15

8.57-2.47+3.43+5.47=(8.57+3.43)+(5.47-2.47)=12+3=15

(8.57-2.47)+(3.43+5.47)
=6.1+8.9
=15

5.47-2.47+8.57+3.43=3+12=15

8.57-2.47+3.43+5.47=8.57+3.43+5.47-2.47=12+3=15