0.4×4=
147÷100=
5.7-3=
0.25×4=
52.3+0.24=
0.2×0.3=
0.36-0.3=
0.55×2=
10-0.45=
0.99×0=
10.7×6.3= 2.7×0.53= 16.8-9.44=