14.3﹣6.8=
0.25×8=
0.33-0.303=
0.125×=
2.4÷0.06=
6a×9a=
÷12=
1-+=
72+28=
2×=
34.6﹣12.8=
600÷20=
1.23×0.4=
树高/m
1
2
4
6
7
影长/m
0.8
1.6
3.2
4.8
5.6
①120+180÷5×6
②9.43﹣(0.39+2.43)
③
④
⑤()×14+
⑥