递等式 乘号× 除号÷ 加号+ 减号- 复制下来填写1 9.88÷4×3.12-7.5==2 13.6×3.12+50.8 ==3 6.75×5.1-4.2==4 (3.3+1.5)×4.6-7.89==5 14.3+1.75×4==6 8.65-7.5×4.78==请一定要帮帮....

问题描述:

递等式 乘号× 除号÷ 加号+ 减号- 复制下来填写
1 9.88÷4×3.12-7.5


2 13.6×3.12+50.8


3 6.75×5.1-4.2


4 (3.3+1.5)×4.6-7.89


5 14.3+1.75×4


6 8.65-7.5×4.78


请一定要帮帮....

1 9.88÷4×3.12-7.5
=0.79-7.5
=-6.71
2 13.6×3.12+50.8
=42.432+50.8
=93.232
3 6.75×5.1-4.2
=34.425-4.2
=30.225
4 (3.3+1.5)×4.6-7.89
=22.08-7.89
=14.19
5 14.3+1.75×4
=14.3+7
=21.3
6 8.65-7.5×4.78
=8.65-35.85
=-27.2

1 9.88÷4×3.12-7.5=2.47×3.12-7.5=7.7064-7.5=0.20642 13.6×3.12+50.8 =42.432+50.8=93.2323 6.75×5.1-4.2=34.425-4.2=30.2254 (3.3+1.5)×4.6-7.89=4.8×4.6-7.89=22.08-7.89=14.195 14.3+1.7...