Các câu hỏi tương tự
\(1.\)Tính
\(a)\frac{120^3}{40^3};\frac{390^4}{130^4};\frac{3^2}{0,375^2}\)
\(2.\)Tính giá trị các biểu thức sau :
\(a)\frac{45^{10}.5^{20}}{75^{15}}\) ; \(b)\frac{\left(0,8\right)^5}{\left(0,4\right)^6}\) ; \(c)\frac{2^{15}.9^4}{6^6.8^3}\)
Tính
a.\(\frac{20^3}{40^3}\)
b \(\frac{390^4}{130^4}\)
c \(\frac{3^2}{0,375^2}\)
a, ( frac{3}{7})^{21}: ( frac{9}{49})^6 f, ( 0,25 )^4. 1024b, frac{390}{130}^4 g, (0,125 )^4. 2048c, ( 0,125 )^3. 512 h, frac{120}{40}^3d, frac{4}{left(0,125right)}^2e,frac{3}{left(0,375right)}^2
Đọc tiếp
a, ( \(\frac{3}{7}\))\(^{21}\): ( \(\frac{9}{49}\))\(^6\) f, ( 0,25 )\(^4\). 1024
b, \(\frac{390}{130}\)\(^4\) g, (0,125 )\(^4\). 2048
c, ( 0,125 )\(^3\). 512 h, \(\frac{120}{40}\)\(^3\)
d, \(\frac{4}{\left(0,125\right)}\)\(^2\)
e,\(\frac{3}{\left(0,375\right)}\)\(^2\)
Tính nhanh :
a ) \(\left(\frac{2}{5}+\frac{2}{7}-\frac{2}{11}\right):\left(\frac{3}{7}-\frac{3}{11}+\frac{3}{5}\right)\)
b) \(\frac{0,125-\frac{1}{5}+\frac{1}{7}}{0,375-\frac{3}{5}+\frac{3}{7}}+\frac{\frac{1}{2}+\frac{1}{3}-0,2}{\frac{3}{4}+0,5-\frac{3}{10}}\)
Thực hiện phép tính :a, sqrt{12frac{1}{4}}.left(-frac{2}{7}right)^2-left[2,left(4right).2frac{5}{11}right]:(-frac{42}{5})b, left(1-frac{1}{2}right).left(1-frac{1}{3}right).left(1-frac{1}{4}right)...left(1-frac{1}{2007}right)c, frac{0,375-0,3+frac{3}{11}+frac{3}{12}}{-0,625+0,5-frac{5}{11}-frac{5}{12}}+frac{1,5+1-0,75}{2,5+frac{5}{3}-1,25}Các bạn giải nhanh giúp mình nha!
Đọc tiếp
Thực hiện phép tính :
a, \(\sqrt{12\frac{1}{4}}.\left(-\frac{2}{7}\right)^2-\left[2,\left(4\right).2\frac{5}{11}\right]:(-\frac{42}{5})\)
b, \(\left(1-\frac{1}{2}\right).\left(1-\frac{1}{3}\right).\left(1-\frac{1}{4}\right)...\left(1-\frac{1}{2007}\right)\)
c, \(\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)
Các bạn giải nhanh giúp mình nha!
Các bạn giải gấp gìum mình nha viết cụ thể ra nha
1. Tính
123^3/ 40^3
390^4 / 130^4
3^2 / (0,375)^2
bài 1: Tính :1)left(-frac{3}{4}right)^0 2)left(-2frac{1}{3}right)^4 3)left(2,5right)^3 4)25^3:5^2 5)2^2.4^3 6)left(frac{1}{5}right)^5.5^3 7)left(frac{1}{5}right)^3.10^3 8) left(-frac{2}{3}right)^4:2^4 9)left(frac{2}{3}right)^4.9^2 10)left(frac{1}{2}right)^3.left(frac{1}{4}right)^2 11)left(frac{120}{40}right)^3 12)frac{390^4}{13...
Đọc tiếp
bài 1: Tính :
1)\(\left(-\frac{3}{4}\right)^0\) 2)\(\left(-2\frac{1}{3}\right)^4\) 3)\(\left(2,5\right)^3\)
4)\(25^3:5^2\) 5)\(2^2.4^3\) 6)\(\left(\frac{1}{5}\right)^5.5^3\)
7)\(\left(\frac{1}{5}\right)^3.10^3\) 8) \(\left(-\frac{2}{3}\right)^4:2^4\) 9)\(\left(\frac{2}{3}\right)^4.9^2\) 10)\(\left(\frac{1}{2}\right)^3.\left(\frac{1}{4}\right)^2\) 11)\(\left(\frac{120}{40}\right)^3\) 12)\(\frac{390^4}{130^4}\)
bài 2: Thực hiện phép tính :
1)\(3-\left(-\frac{6}{7}\right)^0+\left(\frac{1}{2}\right)^2:2\)
2)\(\left(-2\right)^3+2^2+\left(-1\right)^{20}+\left(-2\right)^0\)
3)\(\left(3^2\right)^2-\left(\left(-5\right)^2\right)^2+\left(\left(-2\right)^3\right)^2\)
bài 3: tìm x biết :
a)\(\left(x-1\right)^3=27\)
b)\(x^2+x=0\)
c)\(\left(2x+1\right)^2=25\)
d)\(\left(x-1\right)^{x+2}=\left(x-1\right)^{x+4}\)
bài 4: tính giá trị của:
\(M=100^2-99^2+98^2-97^2+....+2^2-1^2\)
mấy bài này là lũy thừa của số hữu tỉ nha
Bài 1:
1) \(\frac{\left(13\frac{1}{4}-2\frac{5}{27}-10\frac{5}{6}\right).230\frac{1}{25}+46\frac{3}{4}}{\left(1\frac{3}{7}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
2) \(\frac{0,375-0,3+\frac{3}{11}-\frac{3}{17}}{0,625-0,5+\frac{5}{11}-\frac{5}{17}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)
1) \(\left(\frac{1,5+1-0,5}{2,5+\frac{5}{3}-1,25}+\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}\right):\frac{1890}{2005}+115\)
2) A=\(\frac{1,11+0,19-1,3.2}{2,06+0,54}-\left(\frac{1}{3}+\frac{1}{2}\right):2\)
3) A= \(1+\frac{3}{2^3}+\frac{4}{2^4}+...+\frac{100}{2^{100}}\)