问题 解答题
口算:
125×8=
300÷12=450×20=300-82=
299+63=13×4+17×4=12.6×1000=81.6÷1000=
2.03×10=6.6÷100=63÷7÷9=101×25=
答案

125×8=1000,300÷12=25,450×20=9000,300-82=218,
299+63=362,13×4+17×4=120,12.6×1000=12600,81.6÷1000=0.0816,
2.03×10=20.3,6.6÷100=0.066,63÷7÷9=1,101×25=2525.

判断题