Qulay usulda hisoblang: $12\cdot 13+13\cdot 24+36\cdot 47+60\cdot 64$
- A. 5999
- B. 12000
- C. 6000
- D. 6002
Natural sonlar va ular ustida amallar bo‘yicha savol
Javob va yechimni ko‘rish
Javob: 6000
Berilgan ifodani guruhlab yozamiz:
\[
12\cdot 13+13\cdot 24+36\cdot 47+60\cdot 64
=13(12+24)+12\cdot 36+60\cdot 64 .
\]
Endi $13(12+24)=13\cdot 36=468$.
Qolgan ikki ko‘paytma ham $12\cdot 36$ va $60\cdot 64$ ni alohida hisoblaymiz:
\[
12\cdot 36=432,\qquad 60\cdot 64=3840.
\]
Endi barcha natijalarni qo‘shamiz:
\[
468+432+3840=6000.
\]
Shunday qilib, to‘g‘ri javob **C) 6000**.
Mavzuni mustahkamlang
Bu savol Natural sonlar va ular ustida amallar mavzusiga tegishli. Ta’riflar, formulalar va misollarni mavzu sahifasida ko‘ring.
Mavzuni o‘rganish