问题
解答题
下面的分数化成小数,(除不尽的保留两位小数).
|
答案
=7÷25=0.28;7 25
2
=5 8
=21÷8=2.625;21 8
3
=3 20
=63÷20=3.15; 63 20
=7÷11≈0.64;7 11
=13÷40=0.325;13 40
=7÷9≈0.78.7 9
故答案为:0.28,2.625,3.15,0.64,0.325,0.78.
下面的分数化成小数,(除不尽的保留两位小数).
|
=7÷25=0.28;7 25
2
=5 8
=21÷8=2.625;21 8
3
=3 20
=63÷20=3.15; 63 20
=7÷11≈0.64;7 11
=13÷40=0.325;13 40
=7÷9≈0.78.7 9
故答案为:0.28,2.625,3.15,0.64,0.325,0.78.