Whakaoti i te (3/4+0.5)-(4/5-0.2)

$$( \frac { 3 } { 4 } + 0.5 ) - ( \frac { 4 } { 5 } - 0.2 )$$

Aromātai

$$0.65$$

Ngā Upane Otinga

Me tahuri ki tau ā-ira 0.5 ki te hautau \frac{5}{10}. Whakahekea te hautanga \frac{5}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$\frac{3}{4}+\frac{1}{2}-\left(\frac{4}{5}-0.2\right)$$

Ko te maha noa iti rawa atu o 4 me 2 ko 4. Me tahuri \frac{3}{4} me \frac{1}{2} ki te hautau me te tautūnga 4.

$$\frac{3}{4}+\frac{2}{4}-\left(\frac{4}{5}-0.2\right)$$

Tā te mea he rite te tauraro o \frac{3}{4} me \frac{2}{4}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{3+2}{4}-\left(\frac{4}{5}-0.2\right)$$

Tāpirihia te 3 ki te 2, ka 5.

$$\frac{5}{4}-\left(\frac{4}{5}-0.2\right)$$

Me tahuri ki tau ā-ira 0.2 ki te hautau \frac{2}{10}. Whakahekea te hautanga \frac{2}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{5}{4}-\left(\frac{4}{5}-\frac{1}{5}\right)$$

Tā te mea he rite te tauraro o \frac{4}{5} me \frac{1}{5}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{5}{4}-\frac{4-1}{5}$$

Tangohia te 1 i te 4, ka 3.

$$\frac{5}{4}-\frac{3}{5}$$

Ko te maha noa iti rawa atu o 4 me 5 ko 20. Me tahuri \frac{5}{4} me \frac{3}{5} ki te hautau me te tautūnga 20.

$$\frac{25}{20}-\frac{12}{20}$$

Tā te mea he rite te tauraro o \frac{25}{20} me \frac{12}{20}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{25-12}{20}$$

Tangohia te 12 i te 25, ka 13.

$$\frac{13}{20}$$

Tauwehe

$$\frac{13}{5 \cdot 2 ^ {2}} = 0.65$$