0.53+0.47=
25×40%=
5x-= :=x: 7.2+4x=50
:x=: 3x﹣0.9=2.4 x+x=132
50+950= 300﹣201= 45×8= 105÷3=
1﹣= ﹣= 15÷= ×=
12.12﹣12= 2.5×6= 100÷50%= 0.3×0.6=
1.05﹣0.85=
1÷12.5%=
0.625× =
32×298≈
51× =
24×( ﹣ )=
100÷25÷4=
45× =
÷10=
× =
0÷ =
0.75× =
102﹣92=
7.9+5.12=
2.5×36×4=
15
10
7
( )?