Ôn tập toán 6
Các câu hỏi tương tự
Tính hợp lý các biểu thức sau
A=\(49\dfrac{8}{23}-\left(5\dfrac{7}{32}+14\dfrac{8}{23}\right)\)
B=\(6\dfrac{3}{8}+5\dfrac{1}{2}\)
C=\(8\dfrac{2}{7}-\left(3\dfrac{4}{9}+4\dfrac{2}{7}\right)\)
Làm giúp mình với à, mình tick cho
tính
dfrac{-5}{8}:dfrac{15}{4} dfrac{-15}{17}:dfrac{25}{-34} -48:(dfrac{-24}{5}) dfrac{-30}{7}:(dfrac{-5}{-14})
dfrac{15}{28}:(dfrac{-9}{14}) dfrac{-7}{40}:(-dfrac{21}{20}) (dfrac{-4}{15}).(-dfrac{-25}{8}) dfrac{5}{-14}.(-dfrac{7}{10})
dfrac{-15}{4}.(-dfrac{16}{25}) 15.(-dfrac{13}{10}) (-dfrac{14}{5}).-10 (dfrac{3}{-10}).(-dfrac{-15}{2})
Đọc tiếp
tính
\(\dfrac{-5}{8}:\dfrac{15}{4}\) \(\dfrac{-15}{17}:\dfrac{25}{-34}\) \(-48:(\dfrac{-24}{5})\) \(\dfrac{-30}{7}:(\dfrac{-5}{-14})\)
\(\dfrac{15}{28}:(\dfrac{-9}{14})\) \(\dfrac{-7}{40}:(-\dfrac{21}{20})\) \((\dfrac{-4}{15}).(-\dfrac{-25}{8})\) \(\dfrac{5}{-14}.(-\dfrac{7}{10})\)
\(\dfrac{-15}{4}.(-\dfrac{16}{25})\) \(15.(-\dfrac{13}{10})\) \((-\dfrac{14}{5}).-10\) \((\dfrac{3}{-10}).(-\dfrac{-15}{2})\)
tìm x:
a) \(\left(0,3+x\right).2\dfrac{1}{4}:x=-\dfrac{13}{40}\)
b) \(0,25.x-\dfrac{27}{8}.x=\dfrac{3}{4}\)
c) \(\dfrac{7}{8}+4\dfrac{1}{2}:x=-\dfrac{13}{40}\)
d) \(32\%-0,25:x=-3\dfrac{2}{5}\)
[Phan Đức Gia Linh _ Xin cảm ơn những người đã quan tâm tới câu hỏi của mình!]
a) Cho:
A 40 + dfrac{3}{8} + dfrac{7}{8^2} + dfrac{5}{8^3} + dfrac{32}{8^5}
B dfrac{24}{8^2} + 40 + dfrac{5}{8^2} + dfrac{40}{8^4} + dfrac{5}{8^4}
Hãy so sánh A và B
b) So sánh dfrac{2014^{2014}+1}{2014^{2015}+1} và dfrac{2014^{2013}+1}{2014^{2014}+1}
Các bạn cố gắng giải đầy đủ nhất giúp mình. Cảm ơn rất nhiều!
Đọc tiếp
[Phan Đức Gia Linh _ Xin cảm ơn những người đã quan tâm tới câu hỏi của mình!]
a) Cho:
A = 40 + \(\dfrac{3}{8}\) + \(\dfrac{7}{8^2}\) + \(\dfrac{5}{8^3}\) + \(\dfrac{32}{8^5}\)
B = \(\dfrac{24}{8^2}\) + 40 + \(\dfrac{5}{8^2}\) + \(\dfrac{40}{8^4}\) + \(\dfrac{5}{8^4}\)
Hãy so sánh A và B
b) So sánh \(\dfrac{2014^{2014}+1}{2014^{2015}+1}\) và \(\dfrac{2014^{2013}+1}{2014^{2014}+1}\)
Các bạn cố gắng giải đầy đủ nhất giúp mình. Cảm ơn rất nhiều!
a)\(\dfrac{2}{7}+\dfrac{-3}{8}+\dfrac{11}{7}+\dfrac{1}{3}+\dfrac{1}{7}+\dfrac{5}{-8}\)
b)\(\dfrac{-3}{8}+\dfrac{13}{25}+\dfrac{5}{-8}+\dfrac{2}{-5}+\dfrac{13}{25}\)
tính nhanh
A=\(\dfrac{3}{2^2}.\dfrac{8}{3^2}.\dfrac{15}{4^2}...\dfrac{899}{30^2}\)
B=\(\dfrac{8}{9}.\dfrac{15}{16}.\dfrac{24}{25}...\dfrac{2499}{2500}\)
Bài 1: Tính
a) ( dfrac{-3}{4}+ dfrac{2}{5}) : dfrac{3}{7}+ ( dfrac{3}{5} + dfrac{-9}{4}) :dfrac{3}{7}
b) dfrac{7}{8}: ( dfrac{2}{9}- dfrac{1}{18}) + dfrac{7}{8} : ( dfrac{1}{36} - dfrac{5}{12})
Cần gấp
Đọc tiếp
Bài 1: Tính
a) ( \(\dfrac{-3}{4}\)+ \(\dfrac{2}{5}\)) : \(\dfrac{3}{7}\)+ ( \(\dfrac{3}{5}\) + \(\dfrac{-9}{4}\)) :\(\dfrac{3}{7}\)
b) \(\dfrac{7}{8}\): ( \(\dfrac{2}{9}\)- \(\dfrac{1}{18}\)) + \(\dfrac{7}{8}\) : ( \(\dfrac{1}{36}\) - \(\dfrac{5}{12}\))
Cần gấp 
So sánh A và B :
a) Adfrac{20}{39}+dfrac{22}{27}+dfrac{18}{43}
Bdfrac{14}{39}+dfrac{22}{29}+dfrac{18}{41}
b) Adfrac{3}{8^3}+dfrac{7}{8^4}
Bdfrac{7}{8^3}+dfrac{3}{8^4}
c) Adfrac{10^7+5}{10^7-8}
Bdfrac{10^8+6}{10^8-7}
d) Adfrac{10^{1992}+1}{10^{1991}+1}
Bdfrac{10^{1993}+1}{10^{1992}+1}
Đọc tiếp
So sánh A và B :
a) \(A=\dfrac{20}{39}+\dfrac{22}{27}+\dfrac{18}{43}\)
\(B=\dfrac{14}{39}+\dfrac{22}{29}+\dfrac{18}{41}\)
b) \(A=\dfrac{3}{8^3}+\dfrac{7}{8^4}\)
\(B=\dfrac{7}{8^3}+\dfrac{3}{8^4}\)
c) \(A=\dfrac{10^7+5}{10^7-8}\)
\(B=\dfrac{10^8+6}{10^8-7}\)
d) \(A=\dfrac{10^{1992}+1}{10^{1991}+1}\)
\(B=\dfrac{10^{1993}+1}{10^{1992}+1}\)
a) dfrac{8}{40}+dfrac{-36}{45}
b) dfrac{3}{5}+dfrac{4}{-7}
c) dfrac{8}{40}+dfrac{-36}{45}
d) dfrac{3}{5}+dfrac{4}{-7}
e) dfrac{4}{9}-dfrac{-5}{6}
f) dfrac{6}{7}+dfrac{1}{7}.dfrac{2}{7}+dfrac{1}{7}.dfrac{5}{7}
g) dfrac{4}{9}.dfrac{13}{3}-dfrac{4}{3}.dfrac{40}{9}
h) 8dfrac{2}{7}-left(3dfrac{4}{9}+4dfrac{2}{7}right)
i) left(10dfrac{2}{9}+2dfrac{3}{5}right)-6dfrac{2}{9}
k) dfrac{7}{19}.dfrac{8}{11}+dfrac{7}{19}.dfrac{3}{11}-dfrac{26}{19}
Đọc tiếp
a) \(\dfrac{8}{40}+\dfrac{-36}{45}\)
b) \(\dfrac{3}{5}+\dfrac{4}{-7}\)
c) \(\dfrac{8}{40}+\dfrac{-36}{45}\)
d) \(\dfrac{3}{5}+\dfrac{4}{-7}\)
e) \(\dfrac{4}{9}-\dfrac{-5}{6}\)
f) \(\dfrac{6}{7}+\dfrac{1}{7}.\dfrac{2}{7}+\dfrac{1}{7}.\dfrac{5}{7}\)
g) \(\dfrac{4}{9}.\dfrac{13}{3}-\dfrac{4}{3}.\dfrac{40}{9}\)
h) \(8\dfrac{2}{7}-\left(3\dfrac{4}{9}+4\dfrac{2}{7}\right)\)
i) \(\left(10\dfrac{2}{9}+2\dfrac{3}{5}\right)-6\dfrac{2}{9}\)
k) \(\dfrac{7}{19}.\dfrac{8}{11}+\dfrac{7}{19}.\dfrac{3}{11}-\dfrac{26}{19}\)