56÷7=
5×9=
81÷9=
35+5=
40-8=
54-6=
18÷3=
7×6=
526﹣198= 0.32×2.5= n×n= kg:240g=
24×+= 2.6+1.98= -= 1.6÷25%=
÷= ×÷×0=