Whakaoti i te 7.8%text{of}12.5+2.5%text{of}161=?

$$7.8 \% \text { of } 12.5 + 2.5 \% \text { of } 161 = ?$$

Aromātai

$$5$$

Ngā Upane Otinga

Whakarohaina te \frac{7.8}{100} mā te whakarea i te taurunga me te tauraro ki te 10.

$$\frac{78}{1000}\times 12.5+\frac{2.5}{100}\times 161$$

Whakahekea te hautanga \frac{78}{1000} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{39}{500}\times 12.5+\frac{2.5}{100}\times 161$$

Me tahuri ki tau ā-ira 12.5 ki te hautau \frac{125}{10}. Whakahekea te hautanga \frac{125}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$\frac{39}{500}\times \frac{25}{2}+\frac{2.5}{100}\times 161$$

Me whakarea te \frac{39}{500} ki te \frac{25}{2} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{39\times 25}{500\times 2}+\frac{2.5}{100}\times 161$$

Mahia ngā whakarea i roto i te hautanga \frac{39\times 25}{500\times 2}.

$$\frac{975}{1000}+\frac{2.5}{100}\times 161$$

Whakahekea te hautanga \frac{975}{1000} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 25.

$$\frac{39}{40}+\frac{2.5}{100}\times 161$$

Whakarohaina te \frac{2.5}{100} mā te whakarea i te taurunga me te tauraro ki te 10.

$$\frac{39}{40}+\frac{25}{1000}\times 161$$

Whakahekea te hautanga \frac{25}{1000} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 25.

$$\frac{39}{40}+\frac{1}{40}\times 161$$

Whakareatia te \frac{1}{40} ki te 161, ka \frac{161}{40}.

$$\frac{39}{40}+\frac{161}{40}$$

Tā te mea he rite te tauraro o \frac{39}{40} me \frac{161}{40}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{39+161}{40}$$

Tāpirihia te 39 ki te 161, ka 200.

$$\frac{200}{40}$$

Whakawehea te 200 ki te 40, kia riro ko 5.

$$5$$

Tauwehe

$$5$$