Violympic toán 7
Các câu hỏi tương tự
tính nhanh
B=\(\frac{\left(\frac{1}{4}-\frac{\sqrt{2}}{7}+\frac{3\sqrt{2}}{35}\right)\left(\frac{-4}{15}\right)}{\left(\frac{1}{10}+\frac{3\sqrt{2}}{35}-\frac{\sqrt{2}}{5}\right)\frac{5}{7}}\)
Thực hiện phép tính sau
a. F=[12(1)-2,3(6)]:4,(21)
b.\(\frac{1\frac{11}{34}.4\frac{3}{7}-\left(\frac{3}{2}-6\frac{1}{3}.\frac{2}{19}\right)}{4\frac{5}{6}+\frac{1}{6}.\left(12-5\frac{1}{3}\right)}\)
c.1-\(\frac{\sqrt{121}}{\sqrt{196}}-\frac{\sqrt{169}}{\sqrt{144}}+\frac{\sqrt{25}}{\sqrt{36}}+\left(-1\frac{2}{3}\right):\left(-3\frac{1}{3}\right)\)
a)\(\frac{-7}{12}+\left(\frac{1}{4}+\frac{2}{3}\right)\)
b)0,5 . \(\sqrt{100}\)-\(\sqrt{\frac{1}{4}}\)
c)(-3)\(^2\) . \(\left(\frac{3}{4}-0,25\right)\)-\(\left|3\frac{1}{2}-1\frac{1}{2}\right|\)
a,frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}
b,frac{27^2.8^5}{6^6.32^3}+frac{3^4.4^4}{2^2.6^2}
c,left(1+frac{1}{1.3}right)left(1+frac{1}{2.4}right)left(1+frac{1}{3.5}right)........left(1+frac{1}{20.22}right)
d,frac{3}{2}+frac{7}{6}+frac{13}{12}+frac{21}{20}+.....+frac{91}{90}
e,left(-2^2right)+sqrt{36}-sqrt{9}+sqrt{25} 20).20)
Đọc tiếp
a,\(\frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
b,\(\frac{27^2.8^5}{6^6.32^3}+\frac{3^4.4^4}{2^2.6^2}\)
c,\(\left(1+\frac{1}{1.3}\right)\)\(\left(1+\frac{1}{2.4}\right)\)\(\left(1+\frac{1}{3.5}\right)\)........\(\left(1+\frac{1}{20.22}\right)\)
d,\(\frac{3}{2}\)+\(\frac{7}{6}\)+\(\frac{13}{12}+\frac{21}{20}+.....+\frac{91}{90}\)
e,\(\left(-2^2\right)+\sqrt{36}-\sqrt{9}+\sqrt{25}\) 20).20)
13 tháng 3 2020 lúc 20:02
Tính giá trị biểu thức sau:
Bleft(18frac{1}{3}:sqrt{225}+8frac{2}{3}.sqrt{frac{49}{4}}right):left[left(12frac{1}{3}+8frac{6}{7}right)-frac{left(sqrt{7}right)^2}{left(3.sqrt{2}right)^2}right]:frac{1704}{445}
Cfrac{left(81,624:4frac{4}{3}-4,505right)^2+125frac{3}{4}}{left{left[left(frac{11}{25}right)^2:0,88+3,53right]^2-left(2,75right)^2right}:frac{13}{25}}
P/s: Giúp mik với ạ! Nguyễn Văn Đạt ; @Vũ Minh Tuấn; @Phạm Thị Diệu Huyền; ..........
Đọc tiếp
Tính giá trị biểu thức sau:
\(B=\left(18\frac{1}{3}:\sqrt{225}+8\frac{2}{3}.\sqrt{\frac{49}{4}}\right):\left[\left(12\frac{1}{3}+8\frac{6}{7}\right)-\frac{\left(\sqrt{7}\right)^2}{\left(3.\sqrt{2}\right)^2}\right]:\frac{1704}{445}\)
\(C=\frac{\left(81,624:4\frac{4}{3}-4,505\right)^2+125\frac{3}{4}}{\left\{\left[\left(\frac{11}{25}\right)^2:0,88+3,53\right]^2-\left(2,75\right)^2\right\}:\frac{13}{25}}\)
P/s: Giúp mik với ạ! Nguyễn Văn Đạt ; @Vũ Minh Tuấn; @Phạm Thị Diệu Huyền; ..........
Tính GTLN của
M=\(\frac{3\sqrt{x}+2010}{4\sqrt{x}+1}\)
N=\(\frac{13+3.\left|x-1\right|}{2\left|1-x\right|+5}\)
thực hiện phép tính hợp lí
a, \(5\frac{3}{7}+\frac{7}{29}-0,7-\frac{3}{17}+\frac{22}{19}-2,3\)
b, \(0,375.\left(-1,5\right).\left(-4\right)^2\)
c, \(1\frac{1}{14}-\frac{7}{2}+2\frac{1}{14}:\left(\frac{-7}{2}\right)\)
d, \(\sqrt{0.36}-\sqrt{0,81}+\sqrt{0,49}\)
Tìm x, biết
a, 0,75-(x+\(\frac{1}{2}\))=\(\sqrt{\left(\frac{-4}{5}\right)^2}\)
b, \(\frac{\left(x-1\right)^2}{-3}\)=\(\frac{9}{x-1}\)(x khác 0)
\(\frac{1}{2}.\sqrt{100}-\sqrt{\frac{1}{16}+\left(\frac{1}{3}\right)^0}\)