Whakaoti i te (3.1*10^5)*(2*10^-7)

$$( 3.1 \cdot 10 ^ { 5 } ) \cdot ( 2 \cdot 10 ^ { - 7 } )$$

Aromātai

$$0.062$$

Ngā Upane Otinga

Hei whakarea i ngā pū o te pūtake kotahi, me tāpiri ō rātou taupū. Tāpiria te 5 me te -7 kia riro ai te -2.

$$3.1\times 10^{-2}\times 2$$

Tātaihia te 10 mā te pū o -2, kia riro ko \frac{1}{100}.

$$3.1\times \frac{1}{100}\times 2$$

Whakareatia te 3.1 ki te \frac{1}{100}, ka \frac{31}{1000}.

$$\frac{31}{1000}\times 2$$

Whakareatia te \frac{31}{1000} ki te 2, ka \frac{31}{500}.

$$\frac{31}{500}$$

Tauwehe

$$\frac{31}{2 ^ {2} \cdot 5 ^ {3}} = 0.062$$