=
100÷10%=
0.1﹣10%=
÷0.125=
2÷20%=
15%×5=
1-80%=
75%-30%=
×= 1×= ÷= ÷=
÷= ÷5= 2÷= 0×=
3.5×= ×=
2×= += ×= 0.5×=
×3.5= ÷8= 180÷= 1-=
×= ÷= 1÷20%= 1.25×8=
0÷= 8÷= ×2.8= ÷0.4=