题目内容
填空
6
( )×2=18 2×( )=6
填空.
填空:
选数填空.
100 200 30 40 5 6 7 8 9
( )×( )=1800 ( )×( )=210
( )×( )=600 ( )×( )=240
( )×( )=320 ( )×( )=1000
( )×( )=180 ( )×( )=360