科学记数法基础测验（含答案）

Question 1

把 $4{,}500$ 写成科学记数法。

Accepted Answer

$4.5	imes10^3$

Answer

$4.5	imes10^4$

Answer

$0.45	imes10^4$

Answer

$45	imes10^2$

Question 2

把 $56{,}000{,}000$ 写成科学记数法。

Accepted Answer

$5.6	imes10^7$

Answer

$0.56	imes10^8$

Answer

$5.6	imes10^6$

Answer

$56	imes10^6$

Question 3

按从大到小排序：$6.1	imes10^{-2}$、$5.9	imes10^{-2}$、$6.1	imes10^{-3}$

Accepted Answer

$6.1	imes10^{-2},\ 5.9	imes10^{-2},\ 6.1	imes10^{-3}$

Answer

$6.1	imes10^{-2},\ 6.1	imes10^{-3},\ 5.9	imes10^{-2}$

Answer

$5.9	imes10^{-2},\ 6.1	imes10^{-2},\ 6.1	imes10^{-3}$

Answer

$6.1	imes10^{-3},\ 6.1	imes10^{-2},\ 5.9	imes10^{-2}$

权威认证