Tinh nhanh: 3000÷125; 1200÷50; 132÷12; (3600-108):36

Đáp án+Giải thích các bước giải:

`3000:125`

`=3000:125:8.8`

`=3000:(125.8).8`

`=3000:1000.8`

`=3.8`

`=24`

`1200:50`

`=1200:50:2.2`

`=1200:(50.2).2`

`=1200:100.2`

`=12.2`

`=24`

`132:12`

`=(120+12):12`

`=(120+12). 1/12`

`=120 . 1/12+12 . 1/12`

`=10+1`

`=11`

`(3600-108):36`

`=(3600-108) . 1/36`

`=3600. 1/36-108. 1/36`

`=100-3`

`=97`