Whakaoti i te 20%*4+20%*4+20%*4+10%*5+6*5%*3

$$20 \% \times 4+20 \% \times 4+20 \% \times 4+10 \% \times 5+6 \times 5 \% \times 3$$

Aromātai

$$\frac{19}{5}=3.8$$

Ngā Upane Otinga

Whakahekea te hautanga \frac{20}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 20.

$$\frac{1}{5}\times 4+\frac{20}{100}\times 4+\frac{20}{100}\times 4+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Whakareatia te \frac{1}{5} ki te 4, ka \frac{4}{5}.

$$\frac{4}{5}+\frac{20}{100}\times 4+\frac{20}{100}\times 4+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Whakahekea te hautanga \frac{20}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 20.

$$\frac{4}{5}+\frac{1}{5}\times 4+\frac{20}{100}\times 4+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Whakareatia te \frac{1}{5} ki te 4, ka \frac{4}{5}.

$$\frac{4}{5}+\frac{4}{5}+\frac{20}{100}\times 4+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Tā te mea he rite te tauraro o \frac{4}{5} me \frac{4}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{4+4}{5}+\frac{20}{100}\times 4+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Tāpirihia te 4 ki te 4, ka 8.

$$\frac{8}{5}+\frac{20}{100}\times 4+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Whakahekea te hautanga \frac{20}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 20.

$$\frac{8}{5}+\frac{1}{5}\times 4+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Whakareatia te \frac{1}{5} ki te 4, ka \frac{4}{5}.

$$\frac{8}{5}+\frac{4}{5}+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Tā te mea he rite te tauraro o \frac{8}{5} me \frac{4}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{8+4}{5}+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

Tāpirihia te 8 ki te 4, ka 12.

$$\frac{12}{5}+\frac{10}{100}\times 5+6\times \frac{5}{100}\times 3$$

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

$$\frac{12}{5}+\frac{1}{10}\times 5+6\times \frac{5}{100}\times 3$$

Whakareatia te \frac{1}{10} ki te 5, ka \frac{5}{10}.

$$\frac{12}{5}+\frac{5}{10}+6\times \frac{5}{100}\times 3$$

Whakahekea te hautanga \frac{5}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$\frac{12}{5}+\frac{1}{2}+6\times \frac{5}{100}\times 3$$

Ko te maha noa iti rawa atu o 5 me 2 ko 10. Me tahuri \frac{12}{5} me \frac{1}{2} ki te hautau me te tautūnga 10.

$$\frac{24}{10}+\frac{5}{10}+6\times \frac{5}{100}\times 3$$

Tā te mea he rite te tauraro o \frac{24}{10} me \frac{5}{10}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{24+5}{10}+6\times \frac{5}{100}\times 3$$

Tāpirihia te 24 ki te 5, ka 29.

$$\frac{29}{10}+6\times \frac{5}{100}\times 3$$

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

$$\frac{29}{10}+6\times \frac{1}{20}\times 3$$

Whakareatia te 6 ki te \frac{1}{20}, ka \frac{6}{20}.

$$\frac{29}{10}+\frac{6}{20}\times 3$$

Whakahekea te hautanga \frac{6}{20} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{29}{10}+\frac{3}{10}\times 3$$

Tuhia te \frac{3}{10}\times 3 hei hautanga kotahi.

$$\frac{29}{10}+\frac{3\times 3}{10}$$

Whakareatia te 3 ki te 3, ka 9.

$$\frac{29}{10}+\frac{9}{10}$$

Tā te mea he rite te tauraro o \frac{29}{10} me \frac{9}{10}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{29+9}{10}$$

Tāpirihia te 29 ki te 9, ka 38.

$$\frac{38}{10}$$

Whakahekea te hautanga \frac{38}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{19}{5}$$

Tauwehe

$$\frac{19}{5} = 3\frac{4}{5} = 3.8$$