1+2%=
×0.6=
3.6×=
1.8÷=
÷40=
0.6÷0.6%=
(-)×24=
2.4+7.6÷4=
+÷+=
①600﹣300÷20×5
②(4.8﹣3.8÷2)×0.3
③3.45×99×2+6.9
④(8+ )÷4
⑤ ÷9+ ×
⑥ ÷[ ×( - )]