=________×0.25=________×
×
=________×5=1．直接写出得数．
| 0.5+1.2= | 4+1.5= | 3.2-1.7= | 20×15= | 24×10= |
| 25×4= | 50×80= | 0×43= | 18×11= | 72×80= |
图中有________个角，有________个直角．
如图，竖式中，有些数字被污渍遮住了，这个竖式计算是直接写出得数：
| 5.4+8.5= | 150×6= | 6.78+0.23= | 10-6.5+3.5= |
| 7.5×100= | 60×50= | 287-199= | 0.3×125×8= |
| 1-0.09= | 927÷9= | 60÷100= | 6.3×99+6.3= |
| 0.61×99≈ | 6.9×8.1≈ | 71.9÷8.9≈ | 3.5+0.78+6.5= |
| 0.5+1.2= | 4+1.5= | 3.2-1.7= | 20×15= | 24×10= |
| 25×4= | 50×80= | 0×43= | 18×11= | 72×80= |
| 5.4+8.5= | 150×6= | 6.78+0.23= | 10-6.5+3.5= |
| 7.5×100= | 60×50= | 287-199= | 0.3×125×8= |
| 1-0.09= | 927÷9= | 60÷100= | 6.3×99+6.3= |
| 0.61×99≈ | 6.9×8.1≈ | 71.9÷8.9≈ | 3.5+0.78+6.5= |