80÷20%= 0.4+0.73= 1-0.17=
5.4-0.9= 1-32%= 36×25%=
12.5×0.8= 0.78÷0.6= 0.87+1.23=
每块地砖面积/m2 |
0.2 |
0.3 |
0.4 |
0.6 |
0.8 |
… |
所需地砖的数量/块 |
1200 |
800 |
600 |
400 |
300 |
… |