Тест по действиям с научной записью с ответами

Question 1

Вычислите $\left(3	imes10^4ight)\left(2	imes10^3ight)$ в научной записи.

Accepted Answer

$6	imes10^7$

Answer

$5	imes10^7$

Answer

$6	imes10^1$

Answer

$6	imes10^{12}$

Question 2

Вычислите $\left(1.2	imes10^{-5}ight)\div\left(3	imes10^{-2}ight)$ в научной записи.

Accepted Answer

$4	imes10^{-3}$

Answer

$0.4	imes10^{-3}$

Answer

$4	imes10^{-4}$

Answer

$0.4	imes10^{-7}$

Question 3

Вычислите $\left(5.6	imes10^3ight)+\left(7.8	imes10^2ight)-\left(1.2	imes10^3ight)$ в научной записи.

Accepted Answer

$5.18	imes10^3$

Answer

$5.06	imes10^3$

Answer

$5.18	imes10^2$

Answer

$12.2	imes10^3$

Нам доверяют