ko'rilgani harakatga doir doir masalalar rev da (2)

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mavzu: harakatga doir masalalar yechish 131-132-betlar 4-topshiriq birining uzunligi 3 cm, ikkinchisiniki esa 4 cm bo‘lgan parallel kesmalar chizing. mustaqil topshiriqni tekshirish (131-b). 3 cm 4 cm d b c a ab cd 5-masala ikkita poyezd bir vaqtda bir-biriga qarab yo‘lga chiqdi. 1-poyezdning tezligi 65 km/h, 2-poyezdning tezligi 70 km/h. agar uchrashguncha 2-poyezd 280 km yurgan bo‘lsa, 1-poyezd qancha yo‘l yurgan? mustaqil topshiriqni tekshirish (131-b). 280km ?km 70km/h 65 km/h ?h mustaqilni topshiriqni tekshirish (131-b). 280 km yechish: 280:70=4 (h) – ikkinchi poyezd yurgan vaqt 2) 65 • 4=260 (km) – birinchi poyezd yurgan masofa javob: birinchi poyezd 260 km yurgan. 260 km 4 soat 1-masala. 1) yuk va yengil mashinalar 1 soatda necha kilometr yaqinlashadilar? 2 soatda-chi? 6 soatda-chi? yechish: 1) 50 + 70 = 120 (km) – yuk va yengil mashinalar 1 soatda yaqinlashadilar 2) ( 50 + 70) • 2 = 240 (km) – 2 soatda yaqinlashadilar …

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nchisining tezligi undan 5 km/h kam. 3 soatdan so‘ng ular orasidagi masofa necha kilometr bo‘ladi? ? km 80 km/h ? km/h 3 h 5 km/h kam 1- elektropoyezdning tezligi – 80km/h 2- elektropoyezdning tezligi – ?, 5km/h kam ular orasidagi masofa – ?, 3 soatdan so‘ng yechish: 80 – 5 = 75 (km/h) – ikkinchi elektropoyezd tezligi 80 + 75 = 155 (km/h) – ikkala elektropoyezd tezligi 3) 155 • 3 = 465 (km) – ikkala elektropoyezd orasidagi masofa javob: 3 soatdan so‘ng elektropoyezdlar orasidagi masofa 465 km. 4. teng yonli va teng tomonli uchburchaklar bir xil perimetrga ega. teng tomonli uchburchakning tomonlari 18 cm dan, teng yonli uchburchakning asosi esa 20 cm. teng yonli uchburchakning yon tomonini toping. teng yonli uchburchak teng tomonli uchburchak 20 cm 18 cm 18 cm 18 cm ? cm ? cm teng yonli uchburchak teng tomonli uchburchak 20 cm 18 cm 18 cm 18 …

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mavzu: harakatga doir masalalar yechish 131-132-betlar 4-topshiriq birining uzunligi 3 cm, ikkinchisiniki esa 4 cm bo‘lgan parallel kesmalar chizing. mustaqil topshiriqni tekshirish (131-b). 3 cm 4 cm d b c a ab cd 5-masala ikkita poyezd bir vaqtda bir-biriga qarab yo‘lga chiqdi. 1-poyezdning tezligi 65 km/h, 2-poyezdning tezligi 70 km/h. agar uchrashguncha 2-poyezd 280 km yurgan bo‘lsa, 1-poyezd qancha yo‘l yurgan? mustaqil topshiriqni tekshirish (131-b). 280km ?km 70km/h 65 km/h ?h mustaqilni topshiriqni tekshirish (131-b). 280 km yechish: 280:70=4 (h) – ikkinchi poyezd yurgan vaqt 2) 65 • 4=260 (km) – birinchi poyezd yurgan masofa javob: birinchi poyezd 260 km yurgan. 260 km 4 soat 1-masala. 1) yuk va yengil mashinalar 1 soatda necha kilometr yaqinlashadilar? 2 soatda-chi? 6 soatda-chi?...

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