5.6×1.095.6 1.8×11.8 0.83×0.980.83
0.25×4= 1.3×3= 0.1×0.1= 3.2×30=
1.25÷0.5= 10÷0.1= 3÷0.5= 5.2÷1.3=
树高/m
1
2
3
4
5
影长/m
0.8
1.6
2.4
3.2