3-sinf matematika 11-dars

3-sinf matematika mavzu: pozitsion sanoq sistemasi. 358 142 921 243 413 115 472 h i n d i s t o n 258 285 528 582 825 852 i=1, v=5, x=10, l=50, c=100 xxv + liii xii + iii 25 + 53 = 78 12 + 3 = 15 lxxii – xxxiii x – viii c : v xv • v 72 - 33 = 39 10 - 8 = 2 100 : 5 = 20 15 • 5 = 75 2 487 5 304 12 100 280 600 yodgorliklarga–5h 45min tushlikka–35min bozorga yodgorlikdan–2h 50min kam 9:00 da chiqib - ? soatda qaytadi yechish: 1 soat = 60 minut 1) 5 h 45 min 35 min 5 h 80 min …

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