24-dars matematika 3-sinf (2)

mavzu: aylana yasash a) ochiq siniq chiziq yo'q b) bular ko'pburchaklarga kiradi d) to'g'ri to'rtburchaklarga kiradi e) aylana radius - 5 cm radius. - ?, 20 mm kichik 5 cm = 50 mm 50 mm - 20 mm = 30 mm 30 mm = 3 cm radiuslar aylanani 4 ta bo'lakka bo'ladi a) 0 nuqta aylananing markazi b) oa radius 3 cm ga teng f) qo'lda chizilgan aylana sirkulda chizilgan aylanaday tekis bo'lmaydi 583+186+417+114=1000+300=1300 567890-(67890+29000)=500000-29000=471000 (230000+213759)-13759=230000+200000=430000 56 * 5 *2 * 4 * 24=56*10*100=56000 459+819+541=1000+819=1819 320-(187+120)=200-187=13 (726+385)-426=300+385=685 8*426*125=8*125*426= 1000*426=426000 masalada teskari operatsiyani bajaramiz mehmonxonaga--18 ta yo'lakka - 7 ta ko'p xonaga - 5 ta kam jami - ? ta shar y : 18+7 =15 ta 18-5 = 13 ta 18+25+13...

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