
计算下列各题,要写出主要计算过程,能用简便方法的要用简便方法计算.①600÷24+36 ②8.5×21.5+.
计算下列各题,要写出主要计算过程,能用简便方法的要用简便方法计算.①600÷24+36②8.5×21.5+1.5×21.5③3.5×1.5-1.8÷1.5④(1+13)÷...
计算下列各题,要写出主要计算过程,能用简便方法的要用简便方法计算.①600÷24+36 ②8.5×21.5+1.5×21.5 ③3.5×1.5-1.8÷1.5④(1+13)÷(1-13) ⑤75-25÷715-17 ⑥35÷[(15+13)÷29].
展开
1个回答
展开全部
①600÷24+36
=25+36
=61;
②8.5×21.5+1.5×21.5
=(8.5+1.5)×21.5
=10×21.5
=215;
③3.5×1.5-1.8÷1.5
=5.25-1.2
=4.05;
④(1+
)÷(1-
)
=
÷
=2;
⑤
-
÷
-
=
-
-
=
-(
+
)
=
-1
=
;
⑥
÷[(
+
)÷
]
=
÷[
÷
]
=
÷
=
.
=25+36
=61;
②8.5×21.5+1.5×21.5
=(8.5+1.5)×21.5
=10×21.5
=215;
③3.5×1.5-1.8÷1.5
=5.25-1.2
=4.05;
④(1+
1 |
3 |
1 |
3 |
=
4 |
3 |
2 |
3 |
=2;
⑤
7 |
5 |
2 |
5 |
7 |
15 |
1 |
7 |
=
7 |
5 |
6 |
7 |
1 |
7 |
=
7 |
5 |
6 |
7 |
1 |
7 |
=
7 |
5 |
=
2 |
5 |
⑥
3 |
5 |
1 |
5 |
1 |
3 |
2 |
9 |
=
3 |
5 |
8 |
15 |
2 |
9 |
=
3 |
5 |
12 |
5 |
=
1 |
4 |
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询