(31*10^5)*(2*10^-7) eching

$$( 31 \cdot 10 ^ { 5 } ) \cdot ( 2 \cdot 10 ^ { - 7 } )$$

Baholash

$$\frac{31}{50}=0,62$$

Yechim qadamlari

Ayni asosning daraja ko‘rsatkichlarini ko‘paytirish uchun ularning darajalarini qo‘shing. 5 va -7 ni qo‘shib, -2 ni oling.

$$31\times 10^{-2}\times 2$$

-2 daraja ko‘rsatkichini 10 ga hisoblang va \frac{1}{100} ni qiymatni oling.

$$31\times \frac{1}{100}\times 2$$

\frac{31}{100} hosil qilish uchun 31 va \frac{1}{100} ni ko'paytirish.

$$\frac{31}{100}\times 2$$

\frac{31}{50} hosil qilish uchun \frac{31}{100} va 2 ni ko'paytirish.

$$\frac{31}{50}$$

Omil

$$\frac{31}{2 \cdot 5 ^ {2}} = 0,62$$