=(4/17+13/17)+(-7/15-8/15)+(5/8-7/16)
=1+(-1)+3/16
=3/16
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Các câu hỏi tương tự
sắp xếp các phân số sau theo thứ tự từ bé đến lớn :
a ) \(\frac{7}{10}\ ,\ \frac{10}{13}\ ,\ \)\(\frac{4}{7}\ ,\ \frac{1}{4}\ ,\ \frac{13}{16}\ ,\ \frac{16}{19}\ .\)
b ) \(\frac{13}{10}\ ,\ \frac{17}{14}\ ,\ \frac{11}{8}\ ,\ \frac{8}{5}\ ,\ \frac{18}{15}\ ,\ \frac{21}{18}\)
So sánh \(A\)với\(13\),biết rằng:
\(A=\frac{13}{15}+\frac{7}{5}+\frac{3}{4}+\frac{1}{5}+\frac{1}{7}+\frac{19}{20}+\frac{5}{4}+\frac{1}{3}+\frac{1}{6}+\frac{1}{13}+\frac{17}{23}+\frac{9}{8}+\frac{2}{5}+\frac{1}{7}+\frac{1}{25}+\frac{3}{2}+\frac{1}{8}+\frac{1}{19}+\frac{1}{9}+\frac{1}{97}\)
Tính nhanh
a)\(\frac{11}{15}+\frac{5}{7}+\frac{2}{7}+\frac{4}{15}\)
b)\(\frac{5}{9}x\frac{1}{2}x\frac{5}{9}x\frac{6}{4}\)
c)\(\frac{7}{8}:\frac{1}{2}+\frac{9}{8}:\frac{1}{2}\)
d)\(\frac{17}{10}+\frac{1}{2}-\frac{7}{10}\)
tính nhanh
\(a,\frac{11}{15}+\frac{5}{7}+\frac{2}{7}+\frac{4}{15}\)
\(b,\frac{5}{9}x\frac{1}{2}+\frac{5}{9}x\frac{6}{4}\)
\(c,\frac{7}{8}:\frac{1}{2}+\frac{9}{8}:\frac{1}{2}\)
\(d,\frac{17}{10}+\frac{1}{2}-\frac{7}{10}\)
Tính nhanh
a)\(\frac{11}{15}+\frac{5}{7}+\frac{2}{7}+\frac{4}{15}\)
b)\(\frac{5}{9}x\frac{1}{2}+\frac{5}{9}x\frac{6}{4}\)
c)\(\frac{7}{8}:\frac{1}{2}+\frac{9}{8}:\frac{1}{2}\)
d)\(\frac{17}{10}+\frac{1}{2}-\frac{7}{10}\)
Tinhs giá trị biểu thức ::a) 8,3 x 39 - 2,93 x 500 + 19,3 x 20b) 3frac{3}{2}timesfrac{3}{17}+frac{4}{9}timesfrac{27}{8}-frac{1}{3}c)9,31 : 6 + 13,8 : 6 -5,11 : 6d) frac{19,8div0,2times44,44div0,5times13,2div0,25}{3,3times88,88div0,5times6,6div0,125times5}e) frac{5}{1.6}+frac{5}{6.11}+...+frac{5}{501.506}f) frac{frac{4}{7}+frac{12}{13}+frac{16}{17}-frac{8}{27}}{frac{5}{21}+frac{15}{39}+frac{20}{51}-frac{10}{81}}
Đọc tiếp
Tinhs giá trị biểu thức ::
a) 8,3 x 39 - 2,93 x 500 + 19,3 x 20
b) \(3\frac{3}{2}\times\frac{3}{17}+\frac{4}{9}\times\frac{27}{8}-\frac{1}{3}\)
c)9,31 : 6 + 13,8 : 6 -5,11 : 6
d) \(\frac{19,8\div0,2\times44,44\div0,5\times13,2\div0,25}{3,3\times88,88\div0,5\times6,6\div0,125\times5}\)
e) \(\frac{5}{1.6}+\frac{5}{6.11}+...+\frac{5}{501.506}\)
f) \(\frac{\frac{4}{7}+\frac{12}{13}+\frac{16}{17}-\frac{8}{27}}{\frac{5}{21}+\frac{15}{39}+\frac{20}{51}-\frac{10}{81}}\)
1, Tính :
a ) \(3\frac{17}{24}+2\frac{8}{15}+1\frac{7}{8}\)
b) \(2\frac{4}{11}+5\frac{2}{3}+\frac{7}{11}\)
So sánh rồi sắp xếp các phân số sau theo thứ tự từ bé đến lớn.
\(\frac{19}{20};\frac{17}{18};\frac{18}{19};\frac{15}{16};\frac{16}{17};\frac{13}{14};\frac{14}{15}\)
Tính nhanh:
A = \(\frac{\frac{2}{13}+\frac{2}{15}-\frac{2}{11}}{\frac{68}{34}+\frac{68}{30}-\frac{68}{22}}+\frac{\frac{32}{10}+\frac{32}{14}-\frac{32}{18}}{\frac{17}{5}+\frac{17}{7}-\frac{17}{9}}\)