3.17+7.48-2.78+0.53-3.48-1.62+5.3

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/22 18:25:16
3.17+7.48-2.78+0.53-3.48-1.62+5.33.17+7.48-2.78+0.53-3.48-1.62+5.33.17+7.48-2.78+0.53-3.48-1.62+5.3分

3.17+7.48-2.78+0.53-3.48-1.62+5.3
3.17+7.48-2.78+0.53-3.48-1.62+5.3

3.17+7.48-2.78+0.53-3.48-1.62+5.3
分组
3.17+7.48-2.78+0.53-3.48-1.62+5.3
=(3.17+0.53)+(7.48-3.48)-2.78-1.62+5.3
=3.7+4-2.78-1.62+5.3
=(3.7+5.3)+4-2.78-1.62
=9+4-2.78-1.62
=13-(2.78+1.62)
=13-4.4
=8+5-4.4
=8+0.6
=8.6