-= += ×5÷×5= 4÷0.01×0.1=
4÷-1= 100×9.8+0.2= 15.4﹣(5.4﹣4.5)= 0.15:0.3=
0×5.16= 9.8+2.6= 502-399=
÷4= × = 20×5=
905﹣260= =
= =
1.25×2.5×32= 8÷0.01=
808÷88≈ 697+296≈
25×3.6=
0÷2023=
7.2÷0.4=
2+2%=
( + )×4=
÷ =
3.9+6.1÷ =
1﹣ ÷ =
1﹣35%= 6.5×20%= 1.5÷= =
□○□○□=□(元)
答;还剩( )元。
答;红红原来有( )元钱。