9.9×0.28=
2.772÷0.28=
4.1×0. 5=
2.5÷0.01=
3.5÷0.2=
7.6- 7.6÷2=
6.1×0.3=
0.56÷5.6=
0.62=
2.9÷2.5÷0.4=
52-x=15 10.2-5x=2.2 8x-5x=27
(x+2.5)×4=15 3×1.5+6x=33