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vb . 298 + 476 = 298 + 400 + 70 + 6 = 698 + 70 + 6 = 768 + 6 = 774

Met tussenstappen :
543 + 332 = 543 + ____________________ + ____________________ + ____________________ = ____________________ + ____________________ + ____________________ = ____________________ + ____________________ = ____________________
685 + 456 = 685 + ____________________ + ____________________ + ____________________ = ____________________ + ____________________ + ____________________ = ____________________ + ____________________ = ____________________
503 + 369 = 503 + ____________________ + ____________________ + ____________________ = ____________________ + ____________________ + ____________________ = ____________________ + ____________________ = ____________________

Zonder tussenstappen :
899 + 468 = ____________________
567 + 398 = ____________________

en nu de kers op de taart : ( antwoord in 2 delen ! ! ! ! ! ! )
246 853 + 852 137 = ____________________ ____________________