1.5×4=
1.35+2.5=
1.03+3=
4.5-2.3=
0.3×0.8=
0÷5.23=
0.05×6=
5.1÷0.01=
0.61+99×0.61=
0.2×5÷0.2×5=
0.07×0.8=
1.7×0.03=
1.6×0.5=
4.5×0.03=
0.72÷12=
5.2÷13=
9.6÷0.6=
10.5÷2.1=
3.08×2.5= △19.8÷5.5=
结合上述信息,请在下面三个算式中任选一个,并根据所选算式补充一个数学信息。(不解答)