Qulay usulda hisoblang: $356\cdot 73+644\cdot 27+73\cdot 644+27\cdot 356$
- A. 99990
- B. 100000
- C. 200000
- D. 99997
Natural sonlar va ular ustida amallar bo‘yicha savol
Javob va yechimni ko‘rish
Javob: 100000
Berilgan ifodani guruhlab yozamiz:
\[
356\cdot 73+644\cdot 27+73\cdot 644+27\cdot 356
=(356\cdot 73+27\cdot 356)+(73\cdot 644+644\cdot 27).
\]
Har bir juftlikda umumiy koeffitsientni chiqaramiz:
\[
356\cdot 73+27\cdot 356=356\,(73+27)=356\cdot100,
\]
\[
73\cdot 644+644\cdot 27=644\,(73+27)=644\cdot100.
\]
Endi yig'indini hisoblaymiz:
\[
356\cdot100+644\cdot100=(356+644)\cdot100=1000\cdot100=100000.
\]
Demak, to‘g‘ri javob **B) 100000**.
Mavzuni mustahkamlang
Bu savol Natural sonlar va ular ustida amallar mavzusiga tegishli. Ta’riflar, formulalar va misollarni mavzu sahifasida ko‘ring.
Mavzuni o‘rganish