0.840.804 7.5+2.6510.15
7.1371.3 12-6.446.66
126+=200 411+289= +34=100 69+=200+215=500 283+=600
75.8÷10=
0.528×=52.8
÷100=37.6
×1000=25.6
0÷149=
1000×0.32=
45.5-45=
0.43+9.6=
92÷100=
6÷6×6÷6=
+0.625= ×= 24÷40%= 7.2÷0.9÷0.8=