Bài 2: Cộng, trừ số hữu tỉ
Các câu hỏi tương tự
Tính hợp lý:
a, dfrac{-3}{4}.5dfrac{3}{13}-0,75.dfrac{36}{13}
b, 4dfrac{5}{9}:left(dfrac{-5}{7}right)+dfrac{49}{9}:left(dfrac{-5}{7}right)
c, left(dfrac{-3}{5}+dfrac{4}{9}right):dfrac{7}{11}+left(dfrac{-2}{5}+dfrac{5}{9}right):dfrac{7}{11}
d, dfrac{6}{7}:left(dfrac{3}{26}-dfrac{3}{13}right)+dfrac{6}{7}:left(dfrac{1}{10}-dfrac{8}{5}right)
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Tính hợp lý:
a, \(\dfrac{-3}{4}.5\dfrac{3}{13}-0,75.\dfrac{36}{13}\)
b, \(4\dfrac{5}{9}:\left(\dfrac{-5}{7}\right)+\dfrac{49}{9}:\left(\dfrac{-5}{7}\right)\)
c, \(\left(\dfrac{-3}{5}+\dfrac{4}{9}\right):\dfrac{7}{11}+\left(\dfrac{-2}{5}+\dfrac{5}{9}\right):\dfrac{7}{11}\)
d, \(\dfrac{6}{7}:\left(\dfrac{3}{26}-\dfrac{3}{13}\right)+\dfrac{6}{7}:\left(\dfrac{1}{10}-\dfrac{8}{5}\right)\)
19 tháng 9 2017 lúc 12:00
tinh nhanh
A=\(\dfrac{1}{3}-\dfrac{3}{4}-\left(\dfrac{-3}{5}\right)+\dfrac{1}{64}-\dfrac{2}{9}-\dfrac{1}{36}+\dfrac{1}{15}\)
B=\(\dfrac{1}{3}-\dfrac{3}{5}+\dfrac{5}{7}-\dfrac{7}{9}+\dfrac{9}{11}-\dfrac{11}{3}+\dfrac{13}{15}+\dfrac{11}{15}-\dfrac{9}{11}+\dfrac{7}{9}+\dfrac{7}{9}-\dfrac{5}{7}+\dfrac{3}{3}-\dfrac{1}{3}\)
giup minh nhe minh dang can gap
Tính nhanh :
\(B=\dfrac{1}{5}-\dfrac{3}{7}+\dfrac{5}{9}-\dfrac{2}{11}+\dfrac{7}{13}-\dfrac{9}{16}-\dfrac{7}{13}+\dfrac{2}{11}-\dfrac{5}{9}+\dfrac{3}{7}-\dfrac{1}{5}\)
Thực hiện phép tính
a. dfrac{-1}{24}-left{dfrac{1}{4}-left(dfrac{1}{2}-dfrac{7}{8}right)right}
b.left(8dfrac{5}{11}+3dfrac{5}{8}right)-3dfrac{5}{11}
c.dfrac{4}{9}:left(dfrac{-1}{7}right)+6dfrac{5}{9}:left(dfrac{-1}{7}right)
d. left(dfrac{-1}{5}+dfrac{3}{7}right):dfrac{2}{11}+left(dfrac{-4}{5}+dfrac{4}{7}right):dfrac{2}{11}
M.n giúp mk nha
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Thực hiện phép tính
a. \(\dfrac{-1}{24}-\left\{\dfrac{1}{4}-\left(\dfrac{1}{2}-\dfrac{7}{8}\right)\right\}\)
b.\(\left(8\dfrac{5}{11}+3\dfrac{5}{8}\right)-3\dfrac{5}{11}\)
c.\(\dfrac{4}{9}:\left(\dfrac{-1}{7}\right)+6\dfrac{5}{9}:\left(\dfrac{-1}{7}\right)\)
d. \(\left(\dfrac{-1}{5}+\dfrac{3}{7}\right):\dfrac{2}{11}+\left(\dfrac{-4}{5}+\dfrac{4}{7}\right):\dfrac{2}{11}\)
M.n giúp mk nha
Tính A =\(\dfrac{10\dfrac{1}{3}\left(26\dfrac{1}{3}\dfrac{176}{7}\right)-\dfrac{12}{11}\left(\dfrac{10}{3}-1,75\right)}{\dfrac{5}{\left(91-0,25\right).\dfrac{60}{11}-1}}\) .
16 tháng 6 2018 lúc 8:06
tính nhanh :
a,dfrac{4}{3} - [(dfrac{-11}{6} )- (dfrac{2}{9} + dfrac{5}{3})]
b, (8- dfrac{9}{4} +dfrac{2}{7} ) - ( -6 -dfrac{3}{7} +dfrac{5}{4} ) - ( 3+ dfrac{2}{4} - dfrac{9}{7} )
Đọc tiếp
tính nhanh :
a,\(\dfrac{4}{3}\) - [(\(\dfrac{-11}{6}\) )- (\(\dfrac{2}{9}\) + \(\dfrac{5}{3}\))]
b, (8- \(\dfrac{9}{4}\) +\(\dfrac{2}{7}\) ) - ( -6 -\(\dfrac{3}{7}\) +\(\dfrac{5}{4}\) ) - ( 3+ \(\dfrac{2}{4}\) - \(\dfrac{9}{7}\) )
3. Thực hiện phép tính sau đây
a.\(\dfrac{4}{3}-\left\{\left(6-\dfrac{-11}{6}\right)-\left(\dfrac{2}{9}+\dfrac{5}{3}\right)\right\}\)
b.\(0.5+\dfrac{1}{3}+0,4+\dfrac{5}{7}+\dfrac{1}{6}-\dfrac{1}{35}\)
29 tháng 6 2021 lúc 11:45
c )\(\dfrac{x}{2}-\left(\dfrac{3x}{5}-\dfrac{13}{5}\right)=-\left(\dfrac{7}{5}+\dfrac{7}{10}.x\right)\)
d)\(\dfrac{2x-3}{3}+\dfrac{-3}{2}=\dfrac{5-3x}{6}-\dfrac{1}{3}\)
\((\dfrac{-1}{3}+\dfrac{5}{6}).11-7=\dfrac{3}{6}.11-7\)
mọi người giúp mình vs ai trả lời thì mình sẽ theo dõi nha