\(\frac{0,8\cdot0,04\cdot1,25\cdot25+0,6524+0.3476}{10\cdot125\cdot4\cdot25\cdot8}\)
làm giúp mik, mik vộiiii
Những câu hỏi liên quan
Rút gọn biểu thức sau :
a/ A = \(\frac{8\cdot4\cdot125\cdot25+96524+3476}{10\cdot125\cdot4\cdot25\cdot8}\)
b/ B = \(\frac{5+55+555+5555}{9+99+999+9999}\)
( dấu chấm là dấu nhân nha)
\(A=\frac{8\cdot4\cdot125\cdot25+96524+2476}{10\cdot125\cdot4\cdot25\cdot8}\)
\(A=\frac{1+96524+2476}{10}\)
\(A=\frac{99001}{10}\)
\(B=\frac{5+55+555+5555}{9+99+999+9999}\)
\(B=\frac{9}{5}\)
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tính nhanh
\(\frac{0,8\cdot0,4\cdot1,25\cdot25+0,725+0,275}{1,25\cdot4\cdot8\cdot25}\) \(\frac{9,6\cdot0,2\cdot15,4\cdot2\cdot15,4:0,25}{30,8:0,5\cdot40:0,125\cdot5\cdot6}\)
=\(\frac{\left(0,8.1,25\right).\left(0,4.25\right)+1}{\left(4.25\right).\left(1,25.8\right)}\)=\(\frac{1.10}{100.10}=\frac{10}{1000}=\frac{1}{100}\)
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Xem thêm câu trả lời
\(\frac{30\cdot25\cdot7\cdot8}{75\cdot8\cdot12\cdot14}\)=
Các bạn giúp mình nhé!
\(\frac{\text{30.25.7.8}}{\text{75.8.12.14}}=\frac{\left(30:6\right).\left(25:25\right).\left(7:7\right).\left(8:8\right)}{\left(75:25\right).\left(8:8\right).\left(12:6\right).\left(14:7\right)}=\frac{5..1.1.1}{3.1.2.2}=\frac{5}{12}\)
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Tính bằng cách hợp lí :
a, A=\(\dfrac{32\cdot125\cdot25+64\cdot125\cdot0,125}{2+4+6+...+98+100}\)
b, B=\(\dfrac{12\cdot194+6\cdot437\cdot2+3\cdot369\cdot4}{1+5+9+...+57+61+65\cdot2-26}\)
b,\(B=\frac{75\cdot5^4+175\cdot5^4}{20\cdot25\cdot125-625\cdot75}\)
75.54+175.54
20.25.125-625.75
=(75+175).54
20.5.5.125-625.75
=250.54
100.625-625.75
=250.54
625.(100-75)
=250.54
54.25
=250
25
=10
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\(\frac{30\cdot25\cdot7\cdot8}{75\cdot8\cdot12\cdot14}\)=
Xin Online Math giúp em bài này với ạ!
\(\frac{30.25.7.8}{75.8.12.14}=\frac{5.6.5.5.7.8}{5.5.3.8.6.2.7.2}=\frac{5}{3.2.2}=\frac{5}{12}\)
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30 x 25 x 7 x 8 = 2 x 25 x 7 x 8 x 1 = 1
75 x 8 x 12 x 14 25 x 3 x 8 x 12 x 7 x 2 36
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\(\frac{30\times25\times7\times8}{75\times8\times12\times14}=\frac{30\times25}{75\times12\times2}=\frac{750}{1800}\)
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Xem thêm câu trả lời
S=\(\frac{1}{5\cdot6}+\frac{1}{6\cdot7}+\frac{1}{7\cdot8}+...+\frac{1}{24\cdot25}\)
S=\(\frac{1}{5.6}+\frac{1}{6.7}+\frac{1}{7.8}+...+\frac{1}{24.25}\)
= \(\frac{1}{5}-\frac{1}{6}+\frac{1}{6}-\frac{1}{7}+\frac{1}{7}-\frac{1}{8}+...+\frac{1}{24}-\frac{1}{25}\)
= \(\frac{1}{5}-\frac{1}{25}\)
=\(\frac{4}{25}\)
k mik nha
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\(S=\frac{1}{5.6}+\frac{1}{6.7}+\frac{1}{7.8}+...+\frac{1}{24.25}\)
\(S=\frac{1}{5}-\frac{1}{6}+\frac{1}{6}-\frac{1}{7}+\frac{1}{7}-...-\frac{1}{24}+\frac{1}{24}-\frac{1}{25}\)
\(S=\frac{1}{5}-\frac{1}{25}=\frac{4}{25}\)
Vậy \(S=\frac{4}{25}\)
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tính nhanh
e) \(\frac{0,1997+2,5\cdot12,5\cdot0,4\cdot0,08+0,8003}{1,25\cdot2,5\cdot8\cdot4}\)
g)\(\frac{\left(10,6524+0,3476\right)\cdot125\cdot0,4+8}{4\cdot0,1\cdot8\cdot0,25\cdot125}\)
e)\(\frac{0,1997+2,5\cdot12,5\cdot0,4\cdot0,08+8,003}{1,25\cdot2,5\cdot8\cdot4}=\frac{0,1997+1+8,003}{100}=\frac{2}{100}=\frac{1}{50}\)
g)\(\frac{\left(10,6524+0,3476\right)\cdot125\cdot0,4+8}{4\cdot0,1\cdot8\cdot0,25\cdot125}=\frac{11\cdot125\cdot0,4+8}{100}=\frac{558}{100}=5,58\)
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Mk bó tay, chân.
Bạn ''Nguyễn Tiến Dũng'' làm đúng ròi đó.
Hok tốt !
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\(\frac{0,8:\left(\frac{4}{5}\cdot1,25\right)}{0,64-\frac{1}{25}}+\left(1,2\cdot0,5\right):\frac{3}{5}\)
giúp mik giải mới cách làm luôn nha
\(\frac{0,8\div\left(\frac{4}{5}\cdot1,25\right)}{0,64-\frac{1}{25}}+\left(1,2\cdot0,5\right)\div\frac{3}{5}\)
\(=\frac{0,8\div\left(0,8\cdot1,25\right)}{0,64-0,04}+\left(1,2\cdot0,5\right)\div0,6\)
\(=\frac{0,8\div1}{0,6}+0,6\div0,6\)
\(=\frac{0,8}{0,6}+1\)
\(=\frac{4}{3}+1=\frac{7}{3}\)
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\(\frac{0,8\div\left(\frac{4}{5}\cdot1,25\right)}{0,64-\frac{1}{25}}+\left(1,2\cdot0,5\right)\div\frac{3}{5}\)
\(=\frac{0,8\div\left(0,8.1,25\right)}{0,64-0,04}+\left(1,2.0,5\right)\div0,6\)
\(=\frac{0,8\div1}{0,6}+0,6\div0,6\)
\(=\frac{4}{3}+1\)
\(=\frac{7}{3}\)
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