⑴3.6×=
3.6+=
3.6-=
3.6÷=
⑵3.14× 6=
=
21.98÷3.14=
3.14×=
⑶20×50%=
4.5÷50%=
:0.35=
24:=
⑷( ):=3
()×12=
1-=
60÷80%= 0.125××8= (+)×12= -×=
3.99+0.1= 1÷1%= ÷3= 6- = 0.25× ×4=
5-3.09= = 4.3+3.57= 1.9-2÷4= 4× ÷4× =
×16= 12÷= ×= 0×=
1÷= ÷= ÷= ×1.2=
6×= ×2.4= 1÷= ÷7=
100÷10%= ÷= +×7= ×0.9×=
×24= 24÷=
÷2= 35÷= 25×20%=