1 . 下面的计算对吗?把不对的改正改过。
( )改正:
( )改正:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f259d5d61fb5211ed9c7a87608c6fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ba5d5ec581ecfe8c90475aca9327a1.png)
您最近一年使用:0次
2 . 错案:
(1)1-
=
改正:
(2)
-
=1
改正:
(3)
+
=
改正:
(1)1-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1dd362f843e640ce551ad1787c9873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a848020a0d6420af76ec7bbadc9cdf5.png)
改正:
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70309f46f088929e92a01b65941dd552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d833ea9fd7eb55a1f1aca7cf1fa9f925.png)
改正:
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1dd362f843e640ce551ad1787c9873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1dd362f843e640ce551ad1787c9873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d50f51a21a0afefa0953981090b5ebe.png)
改正:
您最近一年使用:0次
3 . 下面各题算得对吗?把不对的改过来。
(1)1.6×
=
×
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0082d85f9b24b2d7fd4ebc2cd7ad4982.png)
(2)
-
×
=
×
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08dd1e25420bb85b96dea24e5d16abee.png)
(3)
×(1-
)=
-
=
(1)1.6×
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea28def1b6514c19952aa395dedb1b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0082d85f9b24b2d7fd4ebc2cd7ad4982.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2008b78a906cf5ecdfd68432fa9ad1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a734873a608f0c070dec80b89d179754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08dd1e25420bb85b96dea24e5d16abee.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738c2eb3b99133f96c55b643911d2f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738c2eb3b99133f96c55b643911d2f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
您最近一年使用:0次
4 . 8-5×
=3×
=
。( ) 改正:( ) 。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738c2eb3b99133f96c55b643911d2f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738c2eb3b99133f96c55b643911d2f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75096deb06fa2aeaace0ec13f59c9ef1.png)
您最近一年使用:0次
5 . 下面的计算对吗?对的画“√”,错的画“×”,并改正。
①
( )改正:
②
+
×![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
=1×![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
=
( ) 改正:
③4.2×
×![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
=4.2×
+4.2×![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
=3.6+2.8
=6.4 ( ) 改正:
①
![](https://img.xkw.com/dksih/QBM/2020/9/13/2548746147045376/2572944367984640/STEM/50fd95fb-66ab-4cdd-85ba-302018f5a515.png?resizew=185)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6503ca085e3ca5f2ba723b0dd66e210b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ee3c61d2298e75fc4f1643f8ebc2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
=1×
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
③4.2×
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4e6eb3663870ed202cc208eaf239dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
=4.2×
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4e6eb3663870ed202cc208eaf239dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
=3.6+2.8
=6.4 ( ) 改正:
您最近一年使用:0次
6 . 下面的计算对吗?如果不对,改过来。
![](https://img.xkw.com/dksih/QBM/2020/8/23/2534098939699200/2569664953491456/STEM/09140d1d-32ef-4d87-9df7-c532d35f5c17.png?resizew=272)
您最近一年使用:0次
7 . 下面各题算得对吗?把不对的改正过来。
(1)
-
×
=
×
=
。( )
(2)
×(1-
)=
-
=
。( )
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2008b78a906cf5ecdfd68432fa9ad1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a734873a608f0c070dec80b89d179754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08dd1e25420bb85b96dea24e5d16abee.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b696b79a748797ef1e56fa31ee9a450d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b696b79a748797ef1e56fa31ee9a450d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
您最近一年使用:0次
8 . 森林医生。(判断对错,并将错的改正过来)
(1)
-
÷
=
÷
=
( )
(2)
÷
÷![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f5806f21b73a389812896b06f320e5.png)
=
×
×![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f5806f21b73a389812896b06f320e5.png)
=
( )
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b41d3f138a3e65b16cdb0f533a7c829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c83bfb80545446de2a31c429b72ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec70f285b0d7e89ed878b007b98e7a9.png)
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d1948aeac3e7bb891381f1d25364cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec70f285b0d7e89ed878b007b98e7a9.png)
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0291a665118574445326c56e0575d0e4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b41d3f138a3e65b16cdb0f533a7c829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b064d26dccd4404d14489f55e8f750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f5806f21b73a389812896b06f320e5.png)
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b41d3f138a3e65b16cdb0f533a7c829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682cdb4d387f92247ba6ebe2c7f74abc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f5806f21b73a389812896b06f320e5.png)
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56a59ff962fe47f2357ced7956725784.png)
您最近一年使用:0次
9 . 下面计算对吗?错误的改正。
(1)
=6-(
)
=6-1
=5( )
(2)1
-(
+
)
=1
-
+![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
=2-![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d41840af35e218a5639a2eff4d80b54.png)
=1
( )
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edea565de4680fef1141c2978561ad11.png)
=6-(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa283c69f0ef07790c67ef1fa0ce6239.png)
=6-1
=5( )
(2)1
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d41840af35e218a5639a2eff4d80b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
=1
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d41840af35e218a5639a2eff4d80b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
=2-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d41840af35e218a5639a2eff4d80b54.png)
=1
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4401b1421c08e525643180aef3f6dadd.png)
您最近一年使用:0次
10 . 下面的计算对吗?把不对的改正过来。
(1)
÷2=
=
(2)
÷5=
×5=
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6c7567972273b4ba733b47bf9d5408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306bd8677a13d3fe417324943dc8ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa585b9257ed0798213a9ae9b87d291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f5509bf3a18d6cef73c8c43eb982ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f5509bf3a18d6cef73c8c43eb982ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
您最近一年使用:0次