计算下面各题,能简便算的要简算
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/14 15:12:24
计算下面各题,能简便算的要简算
17.68/5.2+3.7 2.4*0.75+1.25/2.5 3.6*1.25+0.32/4 7.8-1.9+8.2-8.1 7.3*1.24+8.78*7.3
17.68/5.2+3.7 2.4*0.75+1.25/2.5 3.6*1.25+0.32/4 7.8-1.9+8.2-8.1 7.3*1.24+8.78*7.3
1、
=3.4+3.7
=7.1
2、
=2.4*3/4+0.5
=1.8+0.5
=2.3
3、
=3.6*5/4+0.08
=4.5+0.08
=4.58
4、
=(7.8+8.2)-(1.9+8.1)
=16-10
=6
5、
=7.3*(1.24+8.78)
=7.3*10.02
=7.3*(10+0.02)
=7.3*10+7.3*0.02
=73+0.146
=73.146
=3.4+3.7
=7.1
2、
=2.4*3/4+0.5
=1.8+0.5
=2.3
3、
=3.6*5/4+0.08
=4.5+0.08
=4.58
4、
=(7.8+8.2)-(1.9+8.1)
=16-10
=6
5、
=7.3*(1.24+8.78)
=7.3*10.02
=7.3*(10+0.02)
=7.3*10+7.3*0.02
=73+0.146
=73.146