Whakaoti i te 30+(0825*30)+(15%*30)=

$$30 + ( 0825 \times 30 ) + ( 15 \% \times 30 ) =$$

Aromātai

$$\frac{69}{2}=34.5$$

Ngā Upane Otinga

Whakareatia te 0 ki te 825, ka 0.

$$30+0\times 30+\frac{15}{100}\times 30$$

Whakareatia te 0 ki te 30, ka 0.

$$30+0+\frac{15}{100}\times 30$$

Tāpirihia te 30 ki te 0, ka 30.

$$30+\frac{15}{100}\times 30$$

Whakahekea te hautanga \frac{15}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$30+\frac{3}{20}\times 30$$

Tuhia te \frac{3}{20}\times 30 hei hautanga kotahi.

$$30+\frac{3\times 30}{20}$$

Whakareatia te 3 ki te 30, ka 90.

$$30+\frac{90}{20}$$

Whakahekea te hautanga \frac{90}{20} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 10.

$$30+\frac{9}{2}$$

Me tahuri te 30 ki te hautau \frac{60}{2}.

$$\frac{60}{2}+\frac{9}{2}$$

Tā te mea he rite te tauraro o \frac{60}{2} me \frac{9}{2}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{60+9}{2}$$

Tāpirihia te 60 ki te 9, ka 69.

$$\frac{69}{2}$$

Tauwehe

$$\frac{3 \cdot 23}{2} = 34\frac{1}{2} = 34.5$$