直接写出得数
720÷8= | 50×40= | 0÷9= | 0.1+0.4= | += |
-= | 0.9-0.2= | 32×20= | 1.5+0.3= | += |
把下列各数化成最简分数.
=________ | =________ | =________ | =________ | =________. |
用竖式计算.
69×5= | 91÷7= | 63÷4=验算 | 534×6= | 950×8= | 409×4= |
720÷8= | 50×40= | 0÷9= | 0.1+0.4= | += |
-= | 0.9-0.2= | 32×20= | 1.5+0.3= | += |
=________ | =________ | =________ | =________ | =________. |
69×5= | 91÷7= | 63÷4=验算 | 534×6= | 950×8= | 409×4= |