0.5+1.3 = 3.5-0.8 = 1.1+9 = 0.64-0.4=
0.49÷7 = 2×0.85 = 6÷30= 8×0.9=
1.06×0.82= | 0.41×2.01= |
共棵。
①0.24×5= ②3.6÷0.09= ③1÷0.2=
④4.2÷0.2= ⑤7.2×0.01= ⑥0.018÷0.06=
⑦0.5×1.4×0.2= ⑧6.5÷8÷0.125=
平行四边形的底越长,面积就越大.
求下面图形的面积.



x=121
=
x÷
=12
9.87×1.359.87 2.5×0.4 0.8×1.25
3.23÷0.953.23 7.2÷1.8 72÷0.18