9.直接写出得数.
3.27+7.3= | 5.5÷0.11= | 0.45×99+0.45= | $\frac{5}{8}$-$\frac{2}{5}$+$\frac{3}{8}$= |
10-2$\frac{1}{3}$= | a-$\frac{1}{3}$a×$\frac{3}{4}$= | $\frac{1}{4}$×$\frac{1}{3}$÷$\frac{1}{3}$×$\frac{1}{4}$= | 6.25:$\frac{5}{6}$= |
8.下面的关系式中,a和b成反比例关系的是( )
0 157911 157919 157925 157929 157935 157937 157941 157947 157949 157955 157961 157965 157967 157971 157977 157979 157985 157989 157991 157995 157997 158001 158003 158005 158006 158007 158009 158010 158011 158013 158015 158019 158021 158025 158027 158031 158037 158039 158045 158049 158051 158055 158061 158067 158069 158075 158079 158081 158087 158091 158097 158105 199269
A. | $\frac{3}{a}$.b=5 | B. | $\frac{1}{2}$a=2b | C. | $\frac{a}{3}$=$\frac{4}{b}$ | D. | 2(a+b)=15 |