×=( )
×= ×= ÷= 3.6×=
6×= 18÷= ×= ×8÷×8=
9+=14 14-9=
9+=17 17-9=
9+=15 15-9=
32.8+17.2= 902﹣457= 6×1.2=
0.32÷0.4= -= +=