Question

lớn đến bé

7/8 ; 7/11 ; 7/10 ; 7/9 ; 7/15 ;

tính

a)1/4 + 3/8 + 5/16 = 

b)3/5 - 1/3 - 1/6 = 

c)4/7 x 5/8 x 7/12 = 

d)25/28 : 15/14 x 6/7 = 

Answer 1

\(\frac{7}{8}>\frac{7}{9}>\frac{7}{10}>\frac{7}{11}>\frac{7}{15}\)
Tính :
\(a,\frac{1}{4}+\frac{3}{8}+\frac{5}{16}=\frac{4+6+5}{16}=\frac{15}{16}\)
\(b,\frac{3}{5}-\frac{1}{3}-\frac{1}{6}=\frac{18-10-5}{30}=\frac{3}{30}=\frac{1}{10}\)
\(c,\frac{4}{7}\times\frac{5}{8}\times\frac{7}{12}=\frac{5}{14}\times\frac{7}{12}=\frac{5}{24}\)
\(d,\frac{25}{28}:\frac{15}{14}\times\frac{6}{7}=\frac{25\times14\times6}{28\times15\times7}=\frac{5}{7}\)

Answer 2

\(\frac{7}{15}< \frac{7}{11}< \frac{7}{10}< \frac{7}{9}< \frac{7}{8}\)

\(a=\frac{15}{16};b=\frac{1}{10}\)

\(c=\frac{5}{24};d=\frac{5}{7}\)

Answer 3

7/8; 7/9; 7/10; 7/11; 7/15

a: 15/16

b:1/10

c:5/24

d:5/7

Answer 4

Từ lớn đến bé là \(\frac{7}{15};\frac{7}{11};\frac{7}{10};\frac{7}{9};\frac{7}{8}\)

a)\(\frac{1}{4}+\frac{3}{8}+\frac{5}{16}=\frac{5}{8}+\frac{5}{16}=\frac{15}{16}\)

b)\(\frac{3}{5}-\frac{1}{3}-\frac{1}{6}=\frac{4}{15}-\frac{1}{6}=\frac{1}{10}\)

c)\(\frac{4}{7}x\frac{5}{8}x\frac{7}{12}\)\(=\)\(\frac{5}{14}x\frac{7}{12}=\frac{5}{24}\)

d) \(\frac{25}{28}:\frac{15}{14}x\frac{6}{7}=\frac{5}{6}x\frac{6}{7}=\frac{5}{7}\)