2.74×0.98◯2.74 1.9×0.78◯0.78 4.75×1◯4.75
8.5×15◯85×1.5 86×0.27◯0.27×8.5 6.3×0.98◯6.4×1.04
0.38×0.25= 0.87×1.9=(得数保留两位小数)
150×0.12= 8.5×0.39=(验算)
0.5415=×=×
5.415÷9.5=
54.15÷=0.57
5.6×2.3= ×0.23=12.88
5.6×=128.8 0.56×=0.1288
503.2÷68= 503.2÷6.8=
50.32÷68= 5.032÷6.8=