60×20= 0÷36= 7.2+2.87= 908﹣303≈ =
90×=
5﹣1.8=
0.72÷6=
1÷0.25=
0.95+0.5=
3.4×0.1=
8﹣8×=
2021+100=
102﹣18=
25×24=
+=
0.26-0.22=
2.74﹣1.4=
3.6÷2=
×=
6.4÷80%=
15×=
50+950= 300﹣201= 45×8= 105÷3=
1﹣= ﹣= 15÷= ×=
12.12﹣12= 2.5×6= 100÷50%= 0.3×0.6=
62+48=
68+32= 10-0.6= 1.25×80= 0.8÷0.04=
2.4÷ = × = 5×8%= ÷ =
补充条件:
解答:
1×3+1=22
2×4+1=32
3×5+1=42
……
×+1=20222
n×(n+2)+1=2(n为自然数)