\(-\frac{3}{8}-\left(-\frac{1}{2}\right)^2-0,25\)
\(=-\frac{3}{8}-\frac{1}{4}-\frac{1}{4}\)
\(=-\frac{3}{8}-\frac{2}{4}=-\frac{3}{8}-\frac{1}{2}\)
\(=-\frac{3}{8}-\frac{4}{8}=\frac{-7}{8}\)
2 1/3 + ( - 0.25 ) + 3/8 -2.25 + 1/2 + 5.1
0.25*2/1/3*30*0.5*8/45
TÍNH:
a)-1-1/2.(1+2)-1/3.(1+2+3)-...-1/101.(1+2+3+...+101)
b) 1/77.7^4.11^2.(77)^4.(1/7^2)^8.(7^8)^3.(-11)^3:(7^15.11^8
c) 1:0.25.(1+1/4)^2+25.[1:(4/3)^2 : (5/4)^3] : [1:(-2/3)^3]
GIÚP MÌNH VỚI
1/ (\(\left(-\dfrac{2}{3}\right)\)\(^2\) x \(\dfrac{-9}{8}\) - 25% x \(\dfrac{-16}{5}\)
2/ -1\(\dfrac{2}{5}\) x 75% + \(\dfrac{-7}{5}\) x 25%
3/ -2\(\dfrac{3}{7}\) x (-125%) + \(\dfrac{-17}{7}\) x 25%
4/ (-2)\(^3\) x (\(\dfrac{3}{4}\) x 0.25) : (2\(\dfrac{1}{4}\) - 1\(\dfrac{1}{6}\))
Thuc hien phep tinh:
a) 32.(-1/2)3+1/4
b) 16.(1/2)2.1/2
c) 17/22+4/25+29/25+0,5+5/22
d) 3/11-7/15+8/11-8/15+0.25
Cac ban ghi cac buoc lam gjum mik nha
(2 1/3 - 1/9):(-2 1/6+0.25) + 1 11/69
(x-5/12)mũ 2 : 1 và 1/3= 0.25
Tính : (-6,17 + 3 5/9 - 2 36/97) (1/3 - 0.25 - 1/12)
tính theo cách hợp lí :
25/3 + 0.25 + 1/2 - ( 3.5 + 5/2 - 3/4 )
