a) 1$\frac{1}{4}$ + 50% – $\frac{11}{12}$
b) 1$\frac{1}{2}$ + $\frac{5}{6}$ x ( 1 – $\frac{2}{5}$ )
c) $\frac{1}{4}$ + $\frac{5}{11}$ + $\frac{31}{47}$ + $\frac{18}{33}$ + $\frac{75}{158}$ + $\frac{16}{47}$
d) 21,37 x 53,41 – 420 + 46,59 x 11,37
e) 67 + 31 x 67 + 41 – 57 x 73
làm hết hộ mik ạ!
a) 1$\frac{1}{4}$ + 50% – $\frac{11}{12}$
= 1 + $\frac{1}{4}$ + $\frac{1}{2}$ – $\frac{11}{12}$
= $\frac{5}{4}$ + $\frac{2}{4}$ – $\frac{11}{12}$
= $\frac{7}{4}$ – $\frac{11}{12}$
= $\frac{21}{12}$ – $\frac{11}{12}$
= $\frac{10}{12}$
b) 1$\frac{1}{2}$ + $\frac{5}{6}$ x ( 1 – $\frac{2}{5}$ )
= 1 + $\frac{1}{2}$ + $\frac{5}{6}$ x $\frac{3}{5}$
= 1 + $\frac{1}{2}$ + $\frac{15}{30}$
= 1 + $\frac{1}{2}$ + $\frac{1}{2}$
= 1 + 1
= 2
c) $\frac{1}{4}$ + $\frac{5}{11}$ + $\frac{31}{47}$ + $\frac{18}{33}$ + $\frac{75}{100}$ + $\frac{16}{47}$
= $\frac{1}{4}$ + $\frac{5}{11}$ + $\frac{31}{47}$ + $\frac{6}{11}$ + $\frac{75}{100}$ + $\frac{16}{47}$
= $\frac{1}{4}$ + ( $\frac{5}{11}$ + $\frac{6}{11}$ ) + ( $\frac{16}{47}$ + $\frac{31}{47}$ ) + $\frac{75}{100}$
= $\frac{1}{4}$ + 1 + 1 + $\frac{75}{100}$
= $\frac{25}{100}$ + 1 + 1 + $\frac{75}{100}$
= $\frac{25}{100}$ + $\frac{75}{100}$ + 1 + 1
= 1 + 1 + 1
= 3
d) 11,37 x 53,41 – 420 + 46,59 x 11,37
= 11,37 x ( 53,41 + 46,59 ) – 420
= 11,37 x 100 – 420
= 1137 – 420
= 717
e) 67 + 31 x 67 + 41 – 57 x 73
= 67 x ( 31 + 41 + 1 ) – 57 x 73
= 67 x 73 – 57 x 73
= 73 x ( 67 – 57 )
= 73 x 10
= 730
~ xin câu trả lời hay nhất ạ! ~
d) 11,37 x 53,41 – 420 + 46,59 x 11,37
= 11,37 x ( 53,41 + 46,59 ) – 420
= 11,37 x 100 – 420
= 1137 – 420
= 717
e) 67 + 31 x 67 + 41 – 57 x 73
= 67 x ( 31 + 41 + 1 ) – 57 x 73
= 67 x 73 – 57 x 73
= 73 x ( 67 – 57 )
= 73 x 10
= 730
mik chỉ lm đc từng này thôi xin lỗi nha!