905-598= 0.3+7= 0.72÷0.6= 6÷7= 0.45×6×0.5=
÷ = + = 4÷ ×9= × = × ÷ × =
a= b= c= d=
e= f= g= h=
,a, ,d, ,h,
c-- e-- f-- g--
0.125×16= 1.04×5= 7×12÷7×120=
18.8×20%= ×0.55= 123+﹣123+=