4.5×2.1= 45×=0.945 ×2.1=0.0945
99×0.9999 0.98×9.89.8 460千克0.46吨
3.6×0.230.23 4.94.9×1.1 5.2米522厘米
因数
54
5.4
0.54
36
0.36
3.6
积
①10-3.56=
②0.32×0.8=
③21.35-6.08=
④2.6×0.55=
⑤4.76+6.57=
⑥4.8×1.2=