Whakaoti i te 31/10*3/10+7/5div1/20=?

$$\frac { 31 } { 10 } \times \frac { 3 } { 10 } + \frac { 7 } { 5 } \div \frac { 1 } { 20 } = ?$$

Aromātai

$$\frac{2893}{100}=28.93$$

Ngā Upane Otinga

Me whakarea te \frac{31}{10} ki te \frac{3}{10} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{31\times 3}{10\times 10}+\frac{\frac{7}{5}}{\frac{1}{20}}$$

Mahia ngā whakarea i roto i te hautanga \frac{31\times 3}{10\times 10}.

$$\frac{93}{100}+\frac{\frac{7}{5}}{\frac{1}{20}}$$

Whakawehe \frac{7}{5} ki te \frac{1}{20} mā te whakarea \frac{7}{5} ki te tau huripoki o \frac{1}{20}.

$$\frac{93}{100}+\frac{7}{5}\times 20$$

Tuhia te \frac{7}{5}\times 20 hei hautanga kotahi.

$$\frac{93}{100}+\frac{7\times 20}{5}$$

Whakareatia te 7 ki te 20, ka 140.

$$\frac{93}{100}+\frac{140}{5}$$

Whakawehea te 140 ki te 5, kia riro ko 28.

$$\frac{93}{100}+28$$

Me tahuri te 28 ki te hautau \frac{2800}{100}.

$$\frac{93}{100}+\frac{2800}{100}$$

Tā te mea he rite te tauraro o \frac{93}{100} me \frac{2800}{100}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{93+2800}{100}$$

Tāpirihia te 93 ki te 2800, ka 2893.

$$\frac{2893}{100}$$

Tauwehe

$$\frac{11 \cdot 263}{2 ^ {2} \cdot 5 ^ {2}} = 28\frac{93}{100} = 28.93$$