Whakaoti i te 4.5*31/2-3:0.2

$$4.5 \cdot 3 \frac { 1 } { 2 } - 3 : 0.2$$

Aromātai

$$0.75$$

Ngā Upane Otinga

Whakareatia te 3 ki te 2, ka 6.

$$4.5\times \frac{6+1}{2}-\frac{3}{0.2}$$

Tāpirihia te 6 ki te 1, ka 7.

$$4.5\times \frac{7}{2}-\frac{3}{0.2}$$

Me tahuri ki tau ā-ira 4.5 ki te hautau \frac{45}{10}. Whakahekea te hautanga \frac{45}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$\frac{9}{2}\times \frac{7}{2}-\frac{3}{0.2}$$

Me whakarea te \frac{9}{2} ki te \frac{7}{2} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{9\times 7}{2\times 2}-\frac{3}{0.2}$$

Mahia ngā whakarea i roto i te hautanga \frac{9\times 7}{2\times 2}.

$$\frac{63}{4}-\frac{3}{0.2}$$

Whakarohaina te \frac{3}{0.2} mā te whakarea i te taurunga me te tauraro ki te 10.

$$\frac{63}{4}-\frac{30}{2}$$

Whakawehea te 30 ki te 2, kia riro ko 15.

$$\frac{63}{4}-15$$

Me tahuri te 15 ki te hautau \frac{60}{4}.

$$\frac{63}{4}-\frac{60}{4}$$

Tā te mea he rite te tauraro o \frac{63}{4} me \frac{60}{4}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{63-60}{4}$$

Tangohia te 60 i te 63, ka 3.

$$\frac{3}{4}$$

Tauwehe

$$\frac{3}{2 ^ {2}} = 0.75$$