3-sinf matematika 19-dars 3-chorak

3-sinf matematika mavzu: kub qirralari uzunliklari yig‘indisi 1-topshiriq. fazoviy figuralarni eslang parallelepiped kub silindr piramida konus shar 4 1-topshiriq yodda tuting 2-topshiriq b)l=540 dm a-? a=l:12=540:12=45 dm a=45 dm a)l=a·12=15·12=180 cm d)12*12=144 cm 180-144=36cm sim ortib qoladi 3-topshiriq a=16 cm l=16*12=192 cm a+3=l+12*3 16+3=192+12*3 l=228 cm 4-topshiriq ab,ld,pt,ck,pa,tb,kd,cl,al,bd,pc,kt l=144 cm a-? 144:12=12 cm ab=12 cm 5-topshiriq 12∙x=34∙42 12∙x=1428 x=1428:12 x=119 12∙119=34∙42 1428=1428 t∙12=72 000:60 t∙12=1200 t=1200:12 t=100 100∙12=72 000:60 1200=1200 6-masala y:1)63:3=21 nafar 2)21*5=105 ta 3)63-21=42 nafar 4)42*2=84 ta 5)105+84=189 ta asar 7-misol < < < < 8-misol y:1)378-296=82---a 2)4*82=328---l 3)328*13=4264---a 4)5593+638=6231---m 5)6231-4264=1967---o a...

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