378+256= - 634, 378-256= - 122, 478+429= - 907, 156.6= - 936, 234.3= - 702, 868:7= - 124, 708:3= - 236, (133+117).2= - 500, (78+144).4= - 888, (127+73).5= - 1000,

3 клас математика

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