六年级上册口算过关测试卷
一、口算
÷=            5÷=            ÷=            -=
÷=            ×=            ÷=           20÷=     
+=           0×=              ÷=            +=
5-=           +=                        =
=           8×=              =           =
 =        3.5×=                        +=
=          =             -=            =
-=                         ×18=           =
1－ =       1－（+ ）=     （— ）=     1－（÷）=   
×7+×5=      ×+×=      ×- =       = 
新-课-标 -第- 一-网
二、把下面的比化成最简整数比： 新课标第一网  
　　　  2∶8=       0.2∶1.4=       36∶20=           0.9∶0.72=
　　　
　　　∶ =       ∶=         ∶0.25=         0.6∶=