yuz o'lchov birliklari

matematika 4-sinf djabarova fotima yuz o’lchov birliklari 1-masala rasmlardan foydalanib, qaysi to‘g‘ri to‘rtburchakning yuzi katta va necha kvadrat santimetr katta ekanini aniqlang: 1 s=2x4=8 s=4x5=20 20>8 20-8=12 a b s=a • b to’g’ri to’rtburchakning yuzini topish uchun bo’yini eniga ko’paytiriladi. 2-masala to‘g‘ri to‘rtburchakning yuzi va tomonlaridan biri ma’lum bo‘lganda, ikkinchi tomoni qanday topilganligini tushuntiring: x = 60 : 6 x = 10 j a v o b : 10 cm. x = 45 : 9 x = 5 j a v o b : 5 cm. x• 6 = 60 x• 9 = 45 x x 3-misol ti t/r vaqt (t) masofa (s) tezlik (v) 2h ? km ? km/h bir xil 5h ?, 2100km ortiq 4-masala yechish: 1) 5-2=3 …

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