①
②
③
④
⑤
⑥
87%-37%= ×60%= 8÷12.5%=
: = 2小时:40分钟= 3.6:0.54=
1.5cm:3m= :0.6= 14: =
100×15%= :80%= 48: =
÷3= + = 3.9× = 9÷ =
6- = × = 2+ = - =
×< ÷> ×<1
﹣0.5= +3= ×= 0.8×=
0.23+177%= 2.5×40= 1÷= ×÷×=
×
*
30×50
30×6
50×8
8×6