①3.4×0.12 ②0.9×4.04 ③1.28×3.4(结果精确到百分位)
7.6×0.82=
3.5×8.8=
3.25×0.31=
0.93×2.02≈(结果精确到百分位)
5.9×3.14≈(结果保留一位小数)
1.234×0.6780.678 4.98+0.7894.98×0.789