脱式计算.(能简算的要用简便方法计算)
来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/06/28 13:22:18
脱式计算.(能简算的要用简便方法计算)
5.85-1.75-0.25
5.85+1.89+2.15
24.8+4.6+5.4
15.68-(7.68+2.89)
5.85-1.75-0.25
5.85+1.89+2.15
24.8+4.6+5.4
15.68-(7.68+2.89)
![脱式计算.(能简算的要用简便方法计算)](/uploads/image/z/480116-20-6.jpg?t=%E8%84%B1%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%8E%EF%BC%88%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E8%A6%81%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%89)
(1)5.85-1.75-0.25
=5.85-(1.75+0.25)
=5.85-2
=3.85;
(2)5.85+1.89+2.15
=5.85+2.15+1.89
=8+1.89
=9.89;
(3)24.8+4.6+5.4
=24.8+(4.6+5.4)
=24.8+10
=34.8;
(4)15.68-(7.68+2.89)
=15.68-7.68-2.89
=8-2.89
=5.11.
=5.85-(1.75+0.25)
=5.85-2
=3.85;
(2)5.85+1.89+2.15
=5.85+2.15+1.89
=8+1.89
=9.89;
(3)24.8+4.6+5.4
=24.8+(4.6+5.4)
=24.8+10
=34.8;
(4)15.68-(7.68+2.89)
=15.68-7.68-2.89
=8-2.89
=5.11.