1-sinf matematika uychi tuman 15-maktab

matematika darsi 15-maktab 1-sinf matematika mavzu: uchinchi qo’shiluvchini topish 1-masala. rasm asosida masala tuzing va uni yeching: yechish: 1-usul. 1) 12+10=22 2) 30-22=8 12 kg 10 kg ? kg javob: 3-savatchada 8 kg meva bor 30 kg 2-usul. 30-(12+10)=30-22=8 (kg) 1-savatchada-12 kg 2-savatchada-10 kg 30 kg 3-savatchada-? kg 2-masala masalaning qisqa sharti: 1-idishda-40 litr 2-idishda-35 litr } 95 litr 3-idishda-? litr yechish: 1-usul. 1) 40+35=75 2) 95-75=20 j: 3-idishda 20 (l) yonilg’i bor 2-usul. 1)95-40=55 2) 55-35=20 (l) 3-usul. 95-(40+35)=95-75=20 (l) endi bajarganingizni tekshirib ko`ring: 75-40=35 75-35=40 75+20=95 eslab olamiz. to`g`ri burchakdan kichik bo’lgan burchak o’tkir burchak deyiladi to`g`ri burchakdan katta bo’lgan burchak o’tmas burchak deyiladi 3-misol. yig’indini top...

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