O'nli kasrlar, davriy o'nli kasrlar. Haqiqiy sonlar ustida amallar bo‘yicha savol

Avval ichidagi qavsdagi amallarni hisoblaymiz: $0,1\cdot 0,001=0,0001$, shuning uchun $0,0001-0,0005=-0,0004$. Keyin bu natijani $0,4$ ga bo‘lamiz: $\displaystyle\frac{-0,0004}{0,4}=-0,001$. Endi $-0,001$ ni $100$ ga ko‘paytiramiz: $-0,001\cdot100=-0,1$. Keyingi qism: $\displaystyle\frac{44}{7}=6\frac{2}{7}=6,285714\ldots$; uni $0,175$ ga ko‘paytirsak $6,285714\cdot0,175\approx1,1$. Ikki natijani qo‘shamiz: $-0,1+1,1=1$. Demak, ifodaning qiymati $1$, ya’ni javob **D**.