真题
1 . 口算
6.24﹣2.4=
+
÷
= 992+99= 3.16﹣(7.23﹣6.84)=
6.24﹣2.4=
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492563988480/1576492593405952/STEM/d8cb6952ea0847359d91291e0c068a5b.png)
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492563988480/1576492593405952/STEM/34a416dc078d4f008540893cec9a3e4d.png)
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492563988480/1576492593405952/STEM/34a416dc078d4f008540893cec9a3e4d.png)
您最近一年使用:0次
真题
2 . 能简算的要简算
(1)![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492375941120/1576492412297216/STEM/5db3e961abe940c38bb641199fb17beb.png)
(2)1.2﹣3.79+8.8
(3)
÷〔(
+
)×
〕
(4)7.8÷[32×(1﹣
)+3.6].
(1)
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492375941120/1576492412297216/STEM/5db3e961abe940c38bb641199fb17beb.png)
(2)1.2﹣3.79+8.8
(3)
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492375941120/1576492412297216/STEM/2ce7569d7a2348398d3ace3fd452f4a8.png)
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492375941120/1576492412297216/STEM/be79fc2161eb488087aa0e539a55f909.png)
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492375941120/1576492412297216/STEM/c59538a51cf0408c9aedb38a1438ba21.png)
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492375941120/1576492412297216/STEM/2ce7569d7a2348398d3ace3fd452f4a8.png)
(4)7.8÷[32×(1﹣
![](https://img.xkw.com/dksih/QBM/2014/9/23/1576492375941120/1576492412297216/STEM/ef17368da230430b96857c0f73e6c5fc.png)
您最近一年使用:0次