792:
1) 12,918 - (4,918 + 3,4) = 12,918 - 4,918 = 8 +3,4 = 11,4
2) (6,403 + 8,715) - 2,403 = 6,403 - 2,403 = 4 + 8,715 = 12,715
3) (13,245 + 9,88) - 6,88 = 9,88 - 6,88 = 3 + 13,245 = 16,245
4) 11,703 - (5,4 + 2,703) = 11,703 - 2,703 = 9 + 5,4 = 14,4
В первой 178
1)348:4=87
2)87*6=522
3)700-522=178
во второй 662
1)612:6=102
2)102:3=34
3)696-34=662