\(\frac{11}{24}-\frac{5}{41}+\frac{13}{24}+0,5-\frac{36}{41}\)
\(=\left(\frac{11}{24}+\frac{13}{24}\right)+\left(-\frac{5}{41}-\frac{36}{41}\right)+0,5\)
\(=1+\left(-1\right)+0,5\)
\(=0,5=\frac{1}{2}\)
Mình làm đầy đủ nhé.
Violympic toán 7
Các câu hỏi tương tự
Tính nhanh
a)\(\dfrac{11}{24}-\dfrac{5}{41}+\dfrac{13}{24}+0,5-\dfrac{36}{41}\)
b)\(23\dfrac{1}{4}.\dfrac{7}{5}-13\dfrac{1}{4}:\dfrac{5}{7}\)
Giúp mk vs mai mk hk r
Bài 1: Tính
frac{3}{8}.19frac{1}{3}-frac{3}{8}.33frac{1}{3}
1frac{4}{23}+frac{5}{21}-frac{4}{23}+0,5+frac{16}{21}
frac{21}{47}+frac{9}{45}+frac{26}{47}+frac{4}{5}
frac{15}{12}+frac{5}{13}-frac{3}{12}-frac{18}{13}
frac{11}{24}-frac{5}{41}+frac{13}{24}+0,5-frac{36}{41}
left(-frac{3}{4}+frac{2}{3}right):frac{5}{11}+left(-frac{1}{4}+frac{1}{3}right):frac{5}{11}
left(-3right)^2.left(frac{3}{4}-0,25right)-left(3frac{1}{2}-1frac{1}{2}right)
Đọc tiếp
Bài 1: Tính
\(\frac{3}{8}.19\frac{1}{3}-\frac{3}{8}.33\frac{1}{3}\)
\(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)
\(\frac{21}{47}+\frac{9}{45}+\frac{26}{47}+\frac{4}{5}\)
\(\frac{15}{12}+\frac{5}{13}-\frac{3}{12}-\frac{18}{13}\)
\(\frac{11}{24}-\frac{5}{41}+\frac{13}{24}+0,5-\frac{36}{41}\)
\(\left(-\frac{3}{4}+\frac{2}{3}\right):\frac{5}{11}+\left(-\frac{1}{4}+\frac{1}{3}\right):\frac{5}{11}\)
\(\left(-3\right)^2.\left(\frac{3}{4}-0,25\right)-\left(3\frac{1}{2}-1\frac{1}{2}\right)\)
B. Tự luận
I: Đại số:
Bài 1: Thực hiện phép tính
1) 11/24 - 5/41 + 13/24 + 0,5 - 36/41
2) -12 : (3/4 - 5/6)^2
3) 7/23. [(-8/6) - 45/18]
4) 23frac{1}{4}.frac{7}{5}-13frac{1}{4}:frac{5}{7}
5) (1+frac{2}{3}-frac{1}{4} ) (0,8:-frac{3}{4} )^2
6) 16frac{2}{7}:left(frac{-3}{5}right)+28frac{2}{7}:frac{3}{5}
7) (2^2:frac{4}{3}-frac{1}{2} ) . 6/5 - 17
8) (1/3)^50 .(-9)^25 -2/3:4
9) 3/5: ( -1/15 - 1/6 )+3/5:( -1/3 - 1frac{1}{15} )
10) (-6,5).5,7+5,7.(-3,5)
11) 10.√0,01.√16/9+3√49-1/6√4
12)...
Đọc tiếp
B. Tự luận
I: Đại số:
Bài 1: Thực hiện phép tính
1) 11/24 - 5/41 + 13/24 + 0,5 - 36/41
2) -12 : (3/4 - 5/6)^2
3) 7/23. [(-8/6) - 45/18]
4) \(23\frac{1}{4}.\frac{7}{5}-13\frac{1}{4}:\frac{5}{7}\)
5) (\(1+\frac{2}{3}-\frac{1}{4}\) ) (\(0,8\:-\frac{3}{4}\) )^2
6) 16\(\frac{2}{7}:\left(\frac{-3}{5}\right)+28\frac{2}{7}:\frac{3}{5}\)
7) \((2^2:\frac{4}{3}-\frac{1}{2}\) ) . 6/5 - 17
8) (1/3)^50 .(-9)^25 -2/3:4
9) 3/5: ( -1/15 - 1/6 )+3/5:( -1/3 - 1\(\frac{1}{15}\) )
10) (-6,5).5,7+5,7.(-3,5)
11) 10.√0,01.√16/9+3√49-1/6√4
12) \(\frac{2⁴.2⁶}{\left(2⁵\right)^2}-\frac{2⁵.15^3}{6^3.10^2}\)
Bài 2. Tìm x, biết
1) x/12 - 5/6 = 1/12
2) 2/3 - 1\(\frac{4}{15}x=\frac{-3}{5}\)
3) -2^3 + 0,5x =1,5
Nhiêu đó thôi mik còn thiếu nhiều lắm
1. So sánh các tích sau hợp lý nhất:
P left(-dfrac{21}{34}right)left(-dfrac{13}{27}right)dfrac{7}{9}
Q left(-0,5right)dfrac{3}{19}left(-dfrac{24}{41}right)left(dfrac{8}{31}right)
M dfrac{-6}{17}.dfrac{-5}{17}. ... .dfrac{5}{17}.dfrac{6}{17}
2. Tính hợp lý:
A left(-dfrac{3}{11}right).dfrac{7}{10}.dfrac{11}{-13}.left(-20right)
B dfrac{-4}{9}:dfrac{2}{13}+left(dfrac{-5}{18}right).dfrac{2}{13}
C left(2dfrac{1}{15}.dfrac{3}{19}.dfrac{2}{31}right):left(-dfrac{5}{19}right)
Help me!
Đọc tiếp
1. So sánh các tích sau hợp lý nhất:
P = \(\left(-\dfrac{21}{34}\right)\)\(\left(-\dfrac{13}{27}\right)\)\(\dfrac{7}{9}\)
Q = \(\left(-0,5\right)\)\(\dfrac{3}{19}\)\(\left(-\dfrac{24}{41}\right)\)\(\left(\dfrac{8}{31}\right)\)
M = \(\dfrac{-6}{17}.\dfrac{-5}{17}.\) ... \(.\dfrac{5}{17}.\dfrac{6}{17}\)
2. Tính hợp lý:
A = \(\left(-\dfrac{3}{11}\right).\dfrac{7}{10}.\dfrac{11}{-13}.\left(-20\right)\)
B = \(\dfrac{-4}{9}:\dfrac{2}{13}+\left(\dfrac{-5}{18}\right).\dfrac{2}{13}\)
C = \(\left(2\dfrac{1}{15}.\dfrac{3}{19}.\dfrac{2}{31}\right):\left(-\dfrac{5}{19}\right)\)
Help me!
So sánh
a) 3210 và 1615
b) 2711 và 818
c) 536 và 1124
d) 7 . 213 và 216
(-24/11)+(-19/13)+2/11+(-20/13)
CMR; A= 3638 + 4133
Tính giá trị biểu thức:
a,Adfrac{3^6.45^4-15^{13}.5^{-9}}{27^4.25^3+45^6}
b,^{Bdfrac{left[left(6,2:0,31-dfrac{5}{6}.0,9right).0,2+0,15right]:12}{left(2+1dfrac{4}{11}.0,22:0,1right).dfrac{1}{33}}}
c,Cdfrac{left(dfrac{3}{4}right)^3+left(dfrac{5}{4}right)^3-5left(dfrac{4}{3}-dfrac{5}{4}right)}{left(dfrac{-5}{8}right)^2+left(dfrac{2}{3}right)^2-dfrac{5}{6}}
d,Dleft[dfrac{dfrac{17}{24}.9dfrac{1}{2}-3dfrac{1}{4}.dfrac{17}{24}}{3dfrac{1}{2}.2dfrac{13}{36}+2dfrac{13}{36}.2dfrac{3}{4}}-dfrac{1}{5}rig...
Đọc tiếp
Tính giá trị biểu thức:
a,\(A=\dfrac{3^6.45^4-15^{13}.5^{-9}}{27^4.25^3+45^6}\)
b,\(^{B=\dfrac{\left[\left(6,2:0,31-\dfrac{5}{6}.0,9\right).0,2+0,15\right]:12}{\left(2+1\dfrac{4}{11}.0,22:0,1\right).\dfrac{1}{33}}}\)
c,\(C=\dfrac{\left(\dfrac{3}{4}\right)^3+\left(\dfrac{5}{4}\right)^3-5\left(\dfrac{4}{3}-\dfrac{5}{4}\right)}{\left(\dfrac{-5}{8}\right)^2+\left(\dfrac{2}{3}\right)^2-\dfrac{5}{6}}\)
d,\(D=\left[\dfrac{\dfrac{17}{24}.9\dfrac{1}{2}-3\dfrac{1}{4}.\dfrac{17}{24}}{3\dfrac{1}{2}.2\dfrac{13}{36}+2\dfrac{13}{36}.2\dfrac{3}{4}}-\dfrac{1}{5}\right]^{-2}\)
Giúp em với chị @Nhã Doanh ới!!!!!!!!
Mai em phải đi thi rồi :((
Bài 1: Thực hiện phép tính
a)-9/13 × 12/29 - 9/13 × 17/29 + 24/13
b)(5/3 - 2/11) ÷ 49/33 + (-3/7)^2 -|1/7 - 1/14|