1÷0.05= 9.7+0.03= 1-1÷9= 12×( + )=
× = + = 0.6÷ = 2÷1%=
10﹣6.8= ﹣ = 35×1%= 1.25×24= 5× ÷5× =
0.42= 10÷0.02= 5a×7a= 1÷3= 1﹣1÷6=
32-22=
(3+2)×(3-2)=
52-32=
(5+ 3)×(5-3)=
102-62=
(10+ 6)×(10-6)=