+ =________ | ﹣ =________ | 3× =________ | ÷ =________ |
+ =________ | ÷ =________ | 1﹣ =________ | × =________ |
+ =________ | 30 =________ | 0.48÷0.6=________ | ﹣ =________ |
÷2=________ | 3.5﹣3.05=________ | ÷ =________ | 7 ( + )=________ |
=________ | 1﹣ =________ | ÷ =________ | 4﹣ ﹣ =________ |
0.25 12=________ | =________ | 3.27+1.83=________ | + + =________ |