a):
`8 × 25 - 81 : 9`
`= 200 - 9`
`= 191`
b):
`16 × 2 - (4 × 3 - 36 : 12)`
`= 32 - (4 × 3 - 36/12)`
`= 32 - (12 - 36/12)`
`= 32 - (12 - 3)`
`= 32 - 9`
`= 23`
c):
`18 × 71 + 18 × 28 + 18`
`= 1278 + 504 + 18`
`= 1782 + 18`
`= 1800`
d):
`4 × 5 × 28 + 10 × 64 × 2 + 20 × 8`
`= 20 × 28 + 640 × 2 + 160`
`= 560 + 640 × 2 + 160`
`= 560 + 1280 + 160`
`= 1840 + 160`
`= 2000`
Cho mình xin hay nhất nha bạn!!!
@Drew Mclntyre
