\(\frac{1^6+5^4x3+123}{1x2x...x10}\)
(11x9-100+1) x (1x2x...x10)
(123+123+224)x10*100:10000=?
Tính hợp lí:
a) \(A=\left(\frac{3}{4}-\frac{4}{7}-\frac{5}{6}\right):\left(-\frac{3}{10}+\frac{4}{14}-\frac{-5}{12}\right)\left(\frac{1}{12}-\frac{7}{6}\right)\)
b) 123.(-234+4356-2312)+234.(123-2312)-2312.(-234-123)
a: \(A=\dfrac{63-48-70}{84}:\dfrac{-3\cdot84+4\cdot60+5\cdot70}{840}\cdot\dfrac{1-14}{12}\)
\(=\dfrac{-55}{84}\cdot\dfrac{840}{338}\cdot\dfrac{-13}{12}=\dfrac{55}{1}\cdot\dfrac{10}{338}\cdot\dfrac{13}{12}=\dfrac{275}{156}\)
b: \(=-234\cdot123+123\cdot4356-123\cdot2312+234\cdot123-234\cdot2312+2312\cdot234+2312\cdot123\)
\(=123\cdot4356-123\cdot2312+123\cdot2312=123\cdot4356=535788\)
1) Thực hiện phép tính :
a )
\(\frac{4^6x9^5+6^9x120}{-8^4x3^{12}-6^{11}}\)
b)
\(\frac{1}{1-\frac{1}{1-2-1}}+\frac{1}{1+\frac{1}{1+2-1}}\)
Rút gọn :
M=\(^{\frac{4^6:9^5+6^9x120}{8^4x3^{12}-6^{11}}}\)
M=48:98+69x120/84x312-611
M=(22)8:(32)8+69x23x3x5/(23)4x312-611
M=216:316+69x23x3x5/212x312-611
M=(219:317+69)x5 / 212x312-611
M=27:35x5/62
M=128/243x5:36
M=640/243:36
M=160/2187
5\(\frac{1}{123}\)+6\(\frac{123}{114}\)
tính biểu thức trên
51123 +6123114
=\(\frac{616}{123}+\frac{269}{38}=12,08707745\)
Tính nhanh :
13x27+26x35+13x4-13 (11x9-100+1):(1x2x...x10)
ai làm đầy đủ và nhanh nhất mình sẽ tick
13 x 27 +26 x 35 +13 x 4 - 13
=13 x 27 + 2 x 13 x 35 + 13 x 4 -13 x 1
=13x(27+(2x35) + 4 - 1)
=13x(27+70+4-1)
=13 x 100
=1300
13x27+26x35+13x4-13
=351 + 910 +52 -13
= 1261 +52 -13
= 1313 -13
= 1300
Tính :
\(\frac{2^{12}x3^5-4^6x9^2}{\left(2^2x3\right)^6+8^4x3^5}\)
tính vế trên trước: 2^12 x 3^5 - 4^6 x 9^2 = 4096 x 243 - 4096 x 81 = 4096 x ( 243 - 81 ) = 663552.
tính vế dưới sau : ( 2^2 x 3 )^6 + 8^4 x 3^5 = ( 4 x 3 )^6 + 4096 x 243 = 12^6 + 995328 = 2985984 + 995328 = 3981312.
Vậy được: 663552/3981312 = 1/6.
\(A=\left(1\frac{1}{6}\times\frac{6}{7}\times6:\frac{3}{5}\right):\left(4\frac{1}{5}\times\frac{10}{11}+5\frac{2}{10}\right)\)
\(B=1\frac{13}{15}\times25\%\times3+\left(\frac{8}{15}-\frac{79}{60}\right):1\frac{23}{4}\)
\(C=\frac{123}{4567}\times\frac{1}{8}+\frac{123}{4567}\times\frac{1}{2}-\frac{123}{4567}\times\frac{13}{8}\)
\(D=\frac{10\frac{1}{3}\times\left(24\frac{1}{2}-15\frac{6}{7}\right)-\frac{12}{11}\times\left(\frac{10}{3}-1,75\right)}{\left(\frac{5}{9}-0,25\right)\times\frac{60}{11}+194\frac{8}{99}}\)