3-sinf 1 soniga bo'lish

Mavzu: 1 soniga bo'lish. Ulushlar va ularning nomlanishi. Ifodaning qiymatini toping. 100-(600-300):5 150+20∙4+20 1 3 2 1 2 3 600-300=300 300:5=60 100-60=940 20∙4=80 150+80=230 230+20=250 Noma'lum sonni toping. x-543=304 268+x=866 560:x=8 x∙9=72 x=304+543 x=866-268 x=560:8 x=72:9 x=847 x=598 x=70 x=8 847-543=304 268+598=866 560:70=8 8∙9=72 To'g'ri to'rtburchakning yuzini toping. a=4 sm b=? 2 marta uzun a=4 sm b=? 2 marta uzun yechish: b=4∙2=8 (sm) S=4∙8=32 (sm²) S=32 sm² Javob: S=32 sm² Ko'paytirishni tushuntirish bilan yeching. 2+2+2+2+2=10 2∙5=10 1+1+1+1+1+1=6 1∙6=6 1+1+1=3 1∙3=3 Bo'lishni tushuntirish bilan yeching. 3:1= 24:1= 6:1= 1∙3=3 1∙6=6 1∙24=24 6:1=6 3:1=3 24:1=24 6:6=1 3:3=1 24:24=1 3 6 24 Amallarni bajaring. 585-misol. (180:3):1 (37+170+5):1 1 2 1 2 3 180:3=60 60:1=60 37+170=207 207+5=212 212:1=212 16 sm li tasma chizing va uni bo'laklarga bo'ling. 16 sm 8 sm 4 sm Aylana chizing va uni bo'laklarga bo'ling. 3 4 Masala tuzing va uni yeching. 1 3 2 1 2 3 1 2 1 2 3 3 4 ...