8.用竖式计算下面各题.
128×25= | 816÷51= | 130×70= |
6432÷14= | 301×36= | 578÷28= |
7.直接写出得数.
60×8= | 24×30= | 96÷6= | 70×12= |
0÷32= | 540÷6= | 18×50= | 420÷70= |
39×41≈ | 6294÷71≈ |
3.98×5的积大约是( )
A. | 500 | B. | 450 | C. | 550 |
2.306×4的积的中间有( )个0.
0 163908 163916 163922 163926 163932 163934 163938 163944 163946 163952 163958 163962 163964 163968 163974 163976 163982 163986 163988 163992 163994 163998 164000 164002 164003 164004 164006 164007 164008 164010 164012 164016 164018 164022 164024 164028 164034 164036 164042 164046 164048 164052 164058 164064 164066 164072 164076 164078 164084 164088 164094 164102 199269
A. | 1 | B. | 2 | C. | 0 |