4-sinf Matematika

«Kompyuter yordamida matematika darslarini tushunarli va samarali o'tkazish» 4-sinf 74306 351084 687148 775626 810328 56581 700 + 400 + 300 + 6 300 + 500 + 100 + 80 + 4 600 + 800 + 700 + 100 + 40 + 8 700 + 700 + 500 + 600 + 20 + 6 800 + 100 + 300 + + 20 8 500 + 600 + 500 + 1 80 + Sonlarni sinflarga ajrating. Sonlarni taqqoslang. 101195 101905 310945 311 234140 231040 573611 572611 384794 384694 156404 146505 Masalani javobini toping. Toshkent 3300 km 3253 km 5012 km yechish: 3253+3300+5012=11565 j: 11565 km Har birining og'irligini toping. 74 kg 58 kg yechish: 82 kg 82-74=8 kg (o'rdak) 58-8=50 kg (kenguru) 82-58=24 kg (kuchuk) Masalani javobini toping. Paxtakor 9614 m 2395 m 1564 m yechish: 2395+9614+1564=13573 j: 13573 m Tinchlik Chorsu Beruniy 35565+2329= 36487+24879= 761236+63528= 426128+36783= 661879+323728= 36701+5783= 35565 2329 761236 63528 661879 323728 36487 24879 426128 36783 36701 5783 + + + + + + Ustun usulida hisoblang. 37894 824764 985607 61366 462911 42484 37894 61366 824764 462911 985607 42484 Ifodani qiymatini toping (79906-78806):2x8= (348-800:4)x7+300= (363:3+121)x4+23400= 1 1 2 3 2 2 1 4 3 3 4 4400 1336 24368 Tenglamani yeching (x+457)+2700=7321 (x+457)=7321-2700 x+457=4621 x=4621-457 x=4164 x+552=5143-1358 x+552=3785 x=3785-552 x=3233 51+(30+x)=800 30+x=800-51 30+x=749 x=749-30 x=719 Marraga kim birinchi borish? 6200 : 100 10 380 100 x + 600 500 +400 :2 x3 :5 -300 +500 -100 :3 100 500 1500 100 200 2500 1500 500 Ustun usulida hisoblang. 75m 86sm-6m 88sm 15km 20m+5km 37m 18kg 129g+2kg 470g 63km 75m-13km 95m 90km 13m+1km 86m 4t 618kg+2t 400g 490m 62sm-87m 83sm 129km 83m+63km 03m 7t 817kg+1t 600kg 75m 86sm 6m 88sm 15km 20m 5km 37m 18kg 129g 2kg 470g 63km 75m 13km 95m 90km 13m 1km 86m 4t 618kg 2t 400kg 490m 62sm 87m 83sm 129km 83m 63km 03m 7t 817kg 1t 600kg 68m 98sm 20km 57m 49km 80m 20kg 599g 91km 99m 7t 018kg 402m 79sm 192km 86m 9t 417kg + - + + + + + - - To'g'ri to'rtburchakning bo'yi 36sm, P=146sm. S=? 36sm yechish: P=2(a+b) 146=2(a+36) a=146:2-36=37 S=36x37=1332 S=1332sm.kv To'g'ri to'rtburchakning eni 18sm, P=136sm. S=? 18sm yechish: P=2(a+b) 136=2(18+b) b=136:2-18=50 S=18x50=900 S=900sm.kv To'g'ri to'rtburchakning bo'yi 24sm, S=288sm.kv, P=? 24sm yechish: S=a · b P=2(a+b)=2(12+24)=72 a=288:24=12 288=a·24 P=72sm «Kompyuter yordamida matematika darslarini tushunarli va samarali o'tkazish» 4-sinf 74306 351084 687148 775626 810328 ...