Find (1) If $$ 31 imes 25=775 $$, then $$ 0.31 imes 2.5=\ldots \ldots $$ (2) Fifth of $$ 15=\ldots \ldots \ldots . $$.

Question

Find (1) If $$ 31 	imes 25=775 $$, then $$ 0.31 	imes 2.5=\ldots \ldots $$ (2) Fifth of $$ 15=\ldots \ldots \ldots . $$.

UpStudy AI · Accepted Answer

1. نعلم أن:
   $$
   31 \times 25=775
   $$
   لحساب:
   $$
   0.31 \times 2.5
   $$
   نلاحظ أن $$0.31=\frac{31}{100}$$ و$$2.5=\frac{25}{10}$$. إذًا:
   $$
   0.31 \times 2.5=\frac{31\times25}{100\times10}=\frac{775}{1000}=0.775
   $$

2. حساب الخُمس من $$15$$ يعني قسمة $$15$$ على $$5$$:
   $$
   \frac{15}{5}=3
   $$
1. $$0.31 \times 2.5 = 0.775$$ 2. الخُمس من 15 هو 3

Find (1) If \( 31 \times 25=775 \), then \( 0.31 \times 2.5=\ldots \ldots \) (2) Fifth of \( 15=\ldots \ldots \ldots . \).

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