Whakaoti i te 121/2%text{of}80

$$12 \frac { 1 } { 2 } \% \text { of } 80$$

Aromātai

$$10$$

Ngā Upane Otinga

Tuhia te \frac{\frac{12\times 2+1}{2}}{100} hei hautanga kotahi.

$$\frac{12\times 2+1}{2\times 100}\times 80$$

Whakareatia te 12 ki te 2, ka 24.

$$\frac{24+1}{2\times 100}\times 80$$

Tāpirihia te 24 ki te 1, ka 25.

$$\frac{25}{2\times 100}\times 80$$

Whakareatia te 2 ki te 100, ka 200.

$$\frac{25}{200}\times 80$$

Whakahekea te hautanga \frac{25}{200} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 25.

$$\frac{1}{8}\times 80$$

Whakareatia te \frac{1}{8} ki te 80, ka \frac{80}{8}.

$$\frac{80}{8}$$

Whakawehea te 80 ki te 8, kia riro ko 10.

$$10$$

Tauwehe

$$2\times 5$$