Question

5.42×0.8≈______（保留一位小數(shù)）；
3.4×0.165≈______（保留兩位小數(shù)）；
0.76×2.08≈______（保留三位小數(shù)）．

Answer 1

5.42×0.8≈4.3（保留一位小數(shù)）；
3.4×0.165≈0.56（保留兩位小數(shù)）；
0.76×2.08≈1.581（保留三位小數(shù)）．
故答案為：4.3、0.56、1.581．