а) 13 + 9,7 = 22,7б) 2⅓ - 1 1/6 = 2⅓ - 1⅙ = 1 + 1⅙ = 2⅙в) 4⅔ • 3 = 14г) 4/9 : 5/9 = (4/9) / (5/9) = 4/9 * 9/5 = 4/5
а) 13 + 9,7 = 22,7
б) 2⅓ - 1 1/6 = 2⅓ - 1⅙ = 1 + 1⅙ = 2⅙
в) 4⅔ • 3 = 14
г) 4/9 : 5/9 = (4/9) / (5/9) = 4/9 * 9/5 = 4/5