Выполни сложение по образцу.
58 + 40 = (50 + 8) + 40 = (50 + 40) + 8 = 90 + 8 = 98
58 + 40 = (50 + 8) + 40 = (50 + 40) + 8 = 90 + 8 = 98
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23+30=(20+3)+30=(20+30)+3=50+3=53
20+47=20+(40+7)=(20+40)+7=60+7=67
34+60=(30+4)+60=(30+60)+4=90+4=94
Ответ:
Пошаговое объяснение:
23+30=(20+3)+30=(20+30)+3=50+3=53