0.4×0.7= 3.6÷0.9= 5.8×0.5=
70.7÷7= 0.63÷0.7= 0.125×8=
0.1÷0.01= 10.01×100=
0.25×0.2= 20.4÷0.04= 0.18÷0.018= 1.4×0.3÷1.4×0.3=
1-0.97= 0.99+0.1= 30×0.15= 7.6+2.4÷2=
竹竿的高/m
1
2
3
4
5
竿影的长/m
0.4
0.8
1.2
1.6
2.0
B.每盒有6个;
C.每个4元。
问题:一共花了多少元?