ІІ ЧАСТИНА. I. Тисяча » 116-117
116. 130 – 50 = 80; 150 – 80 = 70; 80 + 70 = 150; 60 + 50 = 110; 90 + 60 = 150; 40 + 60 = 100; 120 – 50 = 70; 140 – 70 = 70. 117. 420 + 60 = 480; 440 + 50 = 490; 480 – 40 = 440; 490 – 70 = 420.
116. 130 – 50 = 80; 150 – 80 = 70; 80 + 70 = 150; 60 + 50 = 110; 90 + 60 = 150; 40 + 60 = 100; 120 – 50 = 70; 140 – 70 = 70. 117. 420 + 60 = 480; 440 + 50 = 490; 480 – 40 = 440; 490 – 70 = 420.