Bài 1: (2,0 điểm) Thực hiện phép tính (Tính hợp lý nếu có thể). a) $\frac{11}{24}$ - $\frac{5}{41}$ + $\frac{13}{24}$ + 0,5 - $\frac{36}{41}$ b) $\frac{1}{2}$.$\frac{3}{4}$ + $\frac{1}{2}$.$\frac{1}{4}$ + $\frac{1}{2}$ c) $(\frac{-3}{4})^{2}$ : $(\frac{-1}{4})^{2}$ + 9.($\frac{-1}{9}$) + |$\frac{-3}{2}$| d) $\sqrt[]{0,25}$.(-3)³ - $\sqrt[]{\frac{1}{81}}$ : ($\frac{-1}{3})^{3}$

a) `11/24 - 5/41 + 13/24 + 0,5 - 36/41`

`= (11/24 + 13/24) - (5/41 + 36/41) + 0,5`

`= 1 - 1 + 0,5`

`= 0,5`

b) `1/2 . 3/4 + 1/2 . 1/4 + 1/2`

`= 1/2 . (3/4 + 1/4 + 1)`

`= 1/2 . 2`

`= 1`

c) `((-3)/4)^2 : ((-1)/4)^2 + 9 . ((-1)/9) + |(-3)/2|`

`= [3/4 : 1/4]^2 - 1 + 3/2`

`= 3^2 - 1 + 1,5`

`= 9 - 1 + 1,5`

`= 9,5`

d) `sqrt{0,25} . (-3)^3 - sqrt{1/81} : ((-1)/3)^3`

`= 0,5 . (-27) - 1/9 : (-1)/27`

`= 1/2 . (-27) - 1/9 . (-27)`

`= (-27) . (1/2 - 1/9)`

`= (-27) . 7/18`

`= -21/2`

`= -10,5`