Whakaoti i te 7*10^-5+89*10^-9-3*10^-5=

$$7 \times 10 ^ { - 5 } + 89 \times 10 ^ { - 9 } - 3 \times 10 ^ { - 5 } =$$

Aromātai

$$\frac{40089}{1000000000}=0.000040089$$

Ngā Upane Otinga

Tātaihia te 10 mā te pū o -5, kia riro ko \frac{1}{100000}.

$$7\times \frac{1}{100000}+89\times 10^{-9}-3\times 10^{-5}$$

Whakareatia te 7 ki te \frac{1}{100000}, ka \frac{7}{100000}.

$$\frac{7}{100000}+89\times 10^{-9}-3\times 10^{-5}$$

Tātaihia te 10 mā te pū o -9, kia riro ko \frac{1}{1000000000}.

$$\frac{7}{100000}+89\times \frac{1}{1000000000}-3\times 10^{-5}$$

Whakareatia te 89 ki te \frac{1}{1000000000}, ka \frac{89}{1000000000}.

$$\frac{7}{100000}+\frac{89}{1000000000}-3\times 10^{-5}$$

Tāpirihia te \frac{7}{100000} ki te \frac{89}{1000000000}, ka \frac{70089}{1000000000}.

$$\frac{70089}{1000000000}-3\times 10^{-5}$$

Tātaihia te 10 mā te pū o -5, kia riro ko \frac{1}{100000}.

$$\frac{70089}{1000000000}-3\times \frac{1}{100000}$$

Whakareatia te 3 ki te \frac{1}{100000}, ka \frac{3}{100000}.

$$\frac{70089}{1000000000}-\frac{3}{100000}$$

Tangohia te \frac{3}{100000} i te \frac{70089}{1000000000}, ka \frac{40089}{1000000000}.

$$\frac{40089}{1000000000}$$

Tauwehe

$$\frac{3 \cdot 7 \cdot 23 \cdot 83}{2 ^ {9} \cdot 5 ^ {9}} = 4.0089 \times 10^{-5}$$