13.下列算式中,( )的积与26×30的积不相等.
A. | 260×3 | B. | 130×6 | C. | 20×36 |
12.一个乘数是20,另一个乘数是25,积是( )
A. | 50 | B. | 500 | C. | 250 |
11.下列运动属于旋转的是( )
0 156818 156826 156832 156836 156842 156844 156848 156854 156856 156862 156868 156872 156874 156878 156884 156886 156892 156896 156898 156902 156904 156908 156910 156912 156913 156914 156916 156917 156918 156920 156922 156926 156928 156932 156934 156938 156944 156946 156952 156956 156958 156962 156968 156974 156976 156982 156986 156988 156994 156998 157004 157012 199269
A. | 小朋友滑滑梯 | B. | 用螺丝刀拧螺丝 | C. | 船在海中航行 |