Whakaoti i te 3-31/4:21/2+0.3=

$$3 - 3 \frac { 1 } { 4 } : 2 \frac { 1 } { 2 } + 0.3 =$$

Aromātai

$$2$$

Ngā Upane Otinga

Whakawehe \frac{3\times 4+1}{4} ki te \frac{2\times 2+1}{2} mā te whakarea \frac{3\times 4+1}{4} ki te tau huripoki o \frac{2\times 2+1}{2}.

$$3-\frac{\left(3\times 4+1\right)\times 2}{4\left(2\times 2+1\right)}+0.3$$

Me whakakore tahi te 2 i te taurunga me te tauraro.

$$3-\frac{1+3\times 4}{2\left(1+2\times 2\right)}+0.3$$

Whakareatia te 3 ki te 4, ka 12.

$$3-\frac{1+12}{2\left(1+2\times 2\right)}+0.3$$

Tāpirihia te 1 ki te 12, ka 13.

$$3-\frac{13}{2\left(1+2\times 2\right)}+0.3$$

Whakareatia te 2 ki te 2, ka 4.

$$3-\frac{13}{2\left(1+4\right)}+0.3$$

Tāpirihia te 1 ki te 4, ka 5.

$$3-\frac{13}{2\times 5}+0.3$$

Whakareatia te 2 ki te 5, ka 10.

$$3-\frac{13}{10}+0.3$$

Me tahuri te 3 ki te hautau \frac{30}{10}.

$$\frac{30}{10}-\frac{13}{10}+0.3$$

Tā te mea he rite te tauraro o \frac{30}{10} me \frac{13}{10}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{30-13}{10}+0.3$$

Tangohia te 13 i te 30, ka 17.

$$\frac{17}{10}+0.3$$

Me tahuri ki tau ā-ira 0.3 ki te hautau \frac{3}{10}.

$$\frac{17}{10}+\frac{3}{10}$$

Tā te mea he rite te tauraro o \frac{17}{10} me \frac{3}{10}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{17+3}{10}$$

Tāpirihia te 17 ki te 3, ka 20.

$$\frac{20}{10}$$

Whakawehea te 20 ki te 10, kia riro ko 2.

$$2$$

Tauwehe

$$2$$