题目内容
如果规定:0.1=
=10-1,0.01=
=10-2,0.001=
=10-3,…
(1)你能用幂的形式表示0.0001,0.00001吗?
(2)你能将0.000001768表示成a×10n的形式吗?(其中1≤a<10,n是负整数)
1 |
10 |
1 |
100 |
1 |
1000 |
(1)你能用幂的形式表示0.0001,0.00001吗?
(2)你能将0.000001768表示成a×10n的形式吗?(其中1≤a<10,n是负整数)
(1)∵0.1=
=10-1,0.01=
=10-2,0.001=
=10-3,…
∴0.0001=10-4,0.00001=10-5;
(2)0.000001768=1.768×10-6.
1 |
10 |
1 |
100 |
1 |
1000 |
∴0.0001=10-4,0.00001=10-5;
(2)0.000001768=1.768×10-6.
练习册系列答案
相关题目