3(1*1/2)+(2-1/2)+(10-1/2) eching

$$3 ( 1 \cdot \frac { 1 } { 2 } ) + ( 2 - \frac { 1 } { 2 } ) + ( 10 - \frac { 1 } { 2 } )$$

Baholash

$$\frac{25}{2}=12,5$$

Yechim qadamlari

3 hosil qilish uchun 3 va 1 ni ko'paytirish.

$$3\times \frac{1}{2}+2-\frac{1}{2}+10-\frac{1}{2}$$

\frac{3}{2} hosil qilish uchun 3 va \frac{1}{2} ni ko'paytirish.

$$\frac{3}{2}+2-\frac{1}{2}+10-\frac{1}{2}$$

2 ni \frac{4}{2} kasrga o‘giring.

$$\frac{3}{2}+\frac{4}{2}-\frac{1}{2}+10-\frac{1}{2}$$

\frac{3}{2} va \frac{4}{2} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{3+4}{2}-\frac{1}{2}+10-\frac{1}{2}$$

7 olish uchun 3 va 4'ni qo'shing.

$$\frac{7}{2}-\frac{1}{2}+10-\frac{1}{2}$$

\frac{7}{2} va \frac{1}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{7-1}{2}+10-\frac{1}{2}$$

6 olish uchun 7 dan 1 ni ayirish.

$$\frac{6}{2}+10-\frac{1}{2}$$

3 ni olish uchun 6 ni 2 ga bo‘ling.

$$3+10-\frac{1}{2}$$

13 olish uchun 3 va 10'ni qo'shing.

$$13-\frac{1}{2}$$

13 ni \frac{26}{2} kasrga o‘giring.

$$\frac{26}{2}-\frac{1}{2}$$

\frac{26}{2} va \frac{1}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{26-1}{2}$$

25 olish uchun 26 dan 1 ni ayirish.

$$\frac{25}{2}$$

Omil

$$\frac{5 ^ {2}}{2} = 12\frac{1}{2} = 12,5$$