501×26=500×2626
900÷(3×5)=900÷35
8.4+2=
32.1÷10=
65.2-5=
0.3×0.7=
2.8÷100=
8×1.5=
0.45×20=
2.6+6.8=
15.4×10÷100=
0.25×30×4=
3.57+1.43= 4.2× =
10-9.2= 0.6×0.6=
0.72÷0.8= 8× ÷8÷ =