作业帮6.15-(2.97+1.75)简便运算写错了，是6.25
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 11:50:46
6.15-(2.97+1.75)简便运算
写错了，是6.25
6.15-(2.97+1.75)
=6.15-3+0.03-1.15-0.6
=6.15-1.15-3+0.03
=5-3+0.03
=2.03
=(6+0.15)-(3-0.03)-(2-0.25)
=6-3-2+0.15+0.03+0.25
=1+0.43
=1.43
1.43计算器
6.15-(2.97+1.75)
=6.15-(3-0.03+1.15+0.6)
=6.15-3+0.03-1.15-0.6
=(6.15-1.15-3)-0.6+0.03
=2-0.6+0.03
=1.4+0.03
=1.43
原式=6.75-0.6-2.97-1.75
=5.75-1.75-0.6-2.97
=5-0.6-2.97
=1-0.6+4-2.97
=0.4+1.03
=1.43