偶也在找啊
不过偶就大发慈悲
前两题偶会的!（算式哦!）
1.（199-47)÷2
=152÷2
=76（枚）
2.10+1=11(分） 15+1=16（分）
11×16=176（分）=2时56分
5:时30分+2时56分=8时26分
```````````````````````````````````````````````````````````````````````````````````````````````````````````````````````
偶又找到了一题了!
3.（1）20×8×2+20×10×2+8×10×2
=320+400+160
=880（平方分米）
（2）20×8×4
=160×4
=640（立方分米）
640÷（10×8）
=640÷80
=8（分米）
```````````````````````````````````````````````````````````````````````````````````````````````````````````````````````
经过偶的九牛二虎之力终于帮你搜到了!
好难搜的!
没人回答的!(>_
