Whakaoti i te 10*[0.57+(20.03-7.5):0.1]

$$10 \cdot [ 0.57 + ( 20.03 - 7.5 ) : 0.1 ]$$

Aromātai

$$1258.7$$

Ngā Upane Otinga

Tangohia te 7.5 i te 20.03, ka 12.53.

$$10\left(0.57+\frac{12.53}{0.1}\right)$$

Whakarohaina te \frac{12.53}{0.1} mā te whakarea i te taurunga me te tauraro ki te 100.

$$10\left(0.57+\frac{1253}{10}\right)$$

Me tahuri ki tau ā-ira 0.57 ki te hautau \frac{57}{100}.

$$10\left(\frac{57}{100}+\frac{1253}{10}\right)$$

Ko te maha noa iti rawa atu o 100 me 10 ko 100. Me tahuri \frac{57}{100} me \frac{1253}{10} ki te hautau me te tautūnga 100.

$$10\left(\frac{57}{100}+\frac{12530}{100}\right)$$

Tā te mea he rite te tauraro o \frac{57}{100} me \frac{12530}{100}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$10\times \frac{57+12530}{100}$$

Tāpirihia te 57 ki te 12530, ka 12587.

$$10\times \frac{12587}{100}$$

Tuhia te 10\times \frac{12587}{100} hei hautanga kotahi.

$$\frac{10\times 12587}{100}$$

Whakareatia te 10 ki te 12587, ka 125870.

$$\frac{125870}{100}$$

Whakahekea te hautanga \frac{125870}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 10.

$$\frac{12587}{10}$$

Tauwehe

$$\frac{41 \cdot 307}{2 \cdot 5} = 1258\frac{7}{10} = 1258.7$$