）×2= 28×25= 
= 25+15×
=
= 
= ﹣|﹣
|= （+4.5）+（﹣4.5）=相关试题
直接写得数．
| 1.4+3.6= |
0.3×0.3= |
0.49÷7= |
7.2÷100= |
| 3.6÷0.6= |
1﹣0.8÷2= |
1﹣0.7= |
4.2÷3= |
| 15×0.4= |
1÷0.25= |
0.23×0.5= |
直接写得数．
| 1.4+3.6= |
0.3×0.3= |
0.49÷7= |
7.2÷100= |
| 3.6÷0.6= |
1﹣0.8÷2= |
1﹣0.7= |
4.2÷3= |
| 15×0.4= |
1÷0.25= |
0.23×0.5= |
。
x
=12 6：30=x：0.5
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