Bài 4: Giá trị tuyệt đối của một số hữu tỉ. Cộng, trừ, nhân, chia số thập phân
Các câu hỏi tương tự
Bài 1:Tính nhanh
A=1,25+1/3/4-(2-4)^2
B=(4+8/18)+(3/11+(-8)/13+3/4)
C=9(1/-3)^3+1/3-2.(-1/2)^2-1/2.(-1/6)^0
1, ( -2/5 + 3/10 ) : ( 2/-5 + |-4/3 - 2| )
2, 12,5 . -5/7 + 9 3/4 - 1,5 . 5/7
3, -1/4 . -5/13 - 5/4 . -7/13 + 1/1,3
4, ( -3/4 + 5/13 ) : 2/7 - ( 2 1/4 + 8/13 ) : 2/7
5, ( 3 - 3/4 + 2/3 ) - ( 2 - 4/3 - 3/2 ) - ( 1 - 7/3 - 9/2 )
6, -1/3 - 8/35 + -2/9 - 1/135 z+ 4/5 + -4/9 + 3/7
Câu 1: Tinh
Aleft(dfrac{3}{5}right)^2.5^2-left(2dfrac{1}{4}right)^3:left(dfrac{3}{4}right)^3+dfrac{1}{2}
Bleft[dfrac{4}{11}.left(dfrac{1}{25}right)^0+dfrac{7}{22}.2right]^{2010}-left(dfrac{1}{2^2}:dfrac{8^2}{4^4}right)^{2009}
dfrac{7}{8}.left(dfrac{2}{12}+dfrac{4}{10}right)
dfrac{3}{2}-dfrac{5}{6}:left(dfrac{1}{2}right)^2+sqrt{4}
Câu 2: Tim x
2.x-dfrac{5}{4}dfrac{20}{15}
left(x+dfrac{1}{3}right)^3left(dfrac{-1}{8}right)
Đọc tiếp
Câu 1: Tinh
\(A=\left(\dfrac{3}{5}\right)^2.5^2-\left(2\dfrac{1}{4}\right)^3:\left(\dfrac{3}{4}\right)^3+\dfrac{1}{2}\)
\(B=\left[\dfrac{4}{11}.\left(\dfrac{1}{25}\right)^0+\dfrac{7}{22}.2\right]^{2010}-\left(\dfrac{1}{2^2}:\dfrac{8^2}{4^4}\right)^{2009}\)
\(\dfrac{7}{8}.\left(\dfrac{2}{12}+\dfrac{4}{10}\right)\)
\(\dfrac{3}{2}-\dfrac{5}{6}:\left(\dfrac{1}{2}\right)^2+\sqrt{4}\)
Câu 2: Tim x
\(2.x-\dfrac{5}{4}=\dfrac{20}{15}\)
\(\left(x+\dfrac{1}{3}\right)^3=\left(\dfrac{-1}{8}\right)\)
Tìm x:
a, -4/9 - 5/9 : x = 1/18
b, |x| = 1/2
c, x. ( x - 1/3 ) = 0
d, ( x - 2 ).( x + 3 ) < 0
e, ( x - 2 ).( x + 3 ) > 0
Tìm x biết
a) |x+5| + |x-3|=9
b)|x+1| + |x-2| +|x+3|=6
c) |x-2|+|x+3|+|x-4|=2
d) 2|x+2|+|4-x|=22
e)|x-2|+|x-3|+2x-8|=9
f)3x|x+1|-2x|x+2|=12
g)|x-1|+3|x-3|-2|x-2|
lm giúp mình với mk đag cần gấp!HEPL MEEEE
17 tháng 8 2021 lúc 20:46
a) |x-1/3|=11/5 b)2|2x-3|=1/2
c)2|3x-1|+1=5 d)3/2+4/5|x-3/4|=7/4
e)|2x-5|=4 f)|x/2-1|=3
27 tháng 9 2021 lúc 11:30
E=\(\dfrac{98:\left(\dfrac{4}{5}.1,25\right)}{0,64-\dfrac{1}{25}}\) + \(\dfrac{\left(1.08-\dfrac{2}{25}\right):\dfrac{4}{7}}{\left(6\dfrac{5}{9}-3\dfrac{1}{4}\right).2\dfrac{2}{17}}\)
mọi người ơi giúp mình bài này vơi , ai làm đc mik tick cho
Mn ơi, giúp mk vs. Mk cần nó lắm.
a) 6 - |\(1/2\)-x|= 2/5
b) |x+3/5|-1/2=1/2
c)4-|x-1/5|=-1/2
d)|x-2/5|+3/4=11/4
Tìm x , biết :
1, |dfrac{3}{2}x + dfrac{1}{2}| | 4x - 1 |
2, | dfrac{5}{4}x - dfrac{7}{2} | - | dfrac{5}{8}x+dfrac{3}{5} | 0
3, | dfrac{7}{5}x+dfrac{2}{3} | | dfrac{4}{3}x-dfrac{1}{4} |
4, | dfrac{7}{8}x+dfrac{5}{6} | - | dfrac{1}{2}x+5 | 0
Đọc tiếp
Tìm x , biết :
1, |\(\dfrac{3}{2}\)x + \(\dfrac{1}{2}\)| = | 4x - 1 |
2, | \(\dfrac{5}{4}\)x - \(\dfrac{7}{2}\) | - | \(\dfrac{5}{8}x+\dfrac{3}{5}\) | = 0
3, | \(\dfrac{7}{5}x+\dfrac{2}{3}\) | = | \(\dfrac{4}{3}x-\dfrac{1}{4}\) |
4, | \(\dfrac{7}{8}x+\dfrac{5}{6}\) | - | \(\dfrac{1}{2}x+5\) | = 0