0.9+9.9+99.9+999.9+9999.9+99999.9=______.
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/28 07:18:55
0.9+9.9+99.9+999.9+9999.9+99999.9=______.
下面有两个小数:
a=
下面有两个小数:
a=
| ||
2012个0 |
(1)0.9+9.9+99.9+999.9+9999.9+99999.9
=(0.9+0.1)+(9.9+0.1)+(99.9=0.1)+(999.9+0.1)+(9999.9+0.1)+(99999.9+0.1)-0.1*6
=1+10+100+1000+10000+100000-0.6
=111111-0.6
=111110.4;
(2)a÷b=
0.00…000016
2012个0÷
0.00…000008
2012个0
=1.6÷8
=0.2.
故答案为:111110.4,0.2.
=(0.9+0.1)+(9.9+0.1)+(99.9=0.1)+(999.9+0.1)+(9999.9+0.1)+(99999.9+0.1)-0.1*6
=1+10+100+1000+10000+100000-0.6
=111111-0.6
=111110.4;
(2)a÷b=
0.00…000016
2012个0÷
0.00…000008
2012个0
=1.6÷8
=0.2.
故答案为:111110.4,0.2.
0.9+9.9+99.9+999.9+9999.9+99999.9=______.
125×(4+8)=______×______+______×______.
填质数:21=______+______=______×______=______-______.
3.76°=______度 ______分 ______秒.
填上适当的质数.24=______+______=______+______=______+______.
巧填单位名称.1______-59______=1______;1______-9______=1______;1___
0.87×99+0.87=______×______.
0.125=5:______=______%=______÷______.
根据1.2×4=0.6×8,可以写成比例______:______=______:______.
0.4:1.2=0.6:1.8可改写成______×______=______×______.
______升______毫升=4050毫升 6.25小时=______时______分.
从36的约数中选出4个数组成比例:______:______=______:______.