\(\frac{5}{16}:0,125+1,456:\frac{7}{25}+4\frac{1}{2}\cdot0,8\)
tÍNH:
a, \(4\frac{25}{16}+25.\left(\frac{9}{16}-\frac{117}{64}\right):\frac{27}{8}\)
b, -15,5x20,8+3,5x9,2-15,5x9,2+3,5x20,8
c, \(\frac{5}{16}:0,125+1,456:\frac{7}{25}+4\frac{1}{2}.0,8\)
-5/16÷0,125+1,456÷7/25-4 1/2×0,8
\(-\frac{5}{16}:0,125+1,456:\frac{7}{25}-4\frac{1}{2}\cdot0,8\)
= \(-2,5+5,2-3,6\)
= -0,9
\(\frac{\frac{5}{16}:0,125+2}{\frac{1}{7}.\frac{7}{25}}+\frac{4}{\frac{1}{2}}.0,8\)= ?
Thực hiện phép tính:
\(\frac{5}{18}-1,456:\frac{7}{25}+4,5\cdot\frac{4}{5}\)
\(9,6\cdot2\frac{1}{2}-\left(2\cdot125+1\frac{5}{12}\right):\frac{1}{4}\)
lớp 6!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
\(\frac{5}{18}-1,456:\frac{7}{25}+4,5.\frac{4}{5}=-\frac{119}{90}\)
5/16 : 0,125 + 1,456 : 7/26 +4 1/2 x 0,8
5/16 : 0,125 + 1,456 : 7/26 +4 1/2 x 0,8 = 6,108
tinh nhanh : 5/16: 0,125+1,456: 7/26+4 1/2*0,8
5/16 : 0,125 + 1,456 : 7/25 + 9/2 * 0,8
tính hộ tớ nha
sao cậu không tính bằng máy tính?
là \(\frac{113}{10}\)
tk nhé!
Thực hiện các phép tính:
a) \(\left(\frac{9}{25}-2.18\right):\left(3\frac{4}{5}+0,2\right)\)
b) \(\frac{5}{18}-1,456:\frac{7}{25}+4,5.\frac{4}{5}\)
a) \(=-\frac{91}{50}:4\)
\(=-\frac{91}{200}\)
b) \(=\frac{5}{18}-\frac{26}{5}+\frac{18}{5}\)
\(=-\frac{119}{90}\)
\(\left(\frac{9}{25}-2,18\right):\left(3\frac{4}{5}+0,2\right)\)
\(=\left(-1,82\right):4\)
\(=-0,455\)
Bài 3: Thực hiện phép tính:
a) \(9,2.2\frac{1}{2}.-\left(2.125-1\frac{5}{12}\right):\frac{1}{4}\)
b) \(\frac{\sqrt{3^2}-\sqrt{39^2}}{\sqrt{59-10-\sqrt{91^2}}}\)
c) \(\frac{5}{18}-1,456:\frac{7}{25}+4,5.\frac{4}{5}\)
a) \(9,2\cdot2\frac{1}{2}-\left(2\cdot0,125-1\frac{5}{12}\right):\frac{1}{4}\)
\(=23-\left(0,25-\frac{17}{12}\right):\frac{1}{4}\)
\(=23-\left(-\frac{7}{6}\right):\frac{1}{4}\)
\(=23-\left(-\frac{14}{3}\right)\)
\(=\frac{83}{3}\)
b) \(\frac{\sqrt{3^2}-\sqrt{39^2}}{\sqrt{59-10-\sqrt{91^2}}}\)
\(=\frac{3-39}{\sqrt{59-10-91}}\)
\(=\frac{-36}{\sqrt{-42}}\)
Vì -42 < 0 \(\Leftrightarrow\)Biểu thức không tồn tại
c) \(\frac{5}{18}-1,456:\frac{7}{25}+4,5\cdot\frac{4}{5}\)
\(=\frac{5}{18}-\frac{26}{5}+\frac{18}{5}\)
\(=\frac{5}{18}-\frac{8}{5}\)
\(=\frac{-119}{90}\)