+33=50 82﹣=35 ﹣26=46
4×=16 ×3=21 6×=18
49+31-52= 99-63+36=
35-(40-5)= 76-(39+28)=
a= b= c= d= e= f=
,a, ,b,
,d, ,e,
算式:
45×0.945 3.8﹣3.7 ÷1