а) 4242-3242+1042 = 42(42-32+10) = 4220 = 840б) 1917+1117 = 17(19+11) = 1730 = 510в) 7379-6739 = 7(379-739) = 7(-360) = -2520г) 1965+1265-3165 = 65(19+12-31) = 650 = 0д) 1683+1983-8283 = 83(16+19-82) = 83(-47) = -3881е) 92718-92717 = 927(18-17) = 9271 = 927ж) 3652+5452 = 52(36+54) = 52*90 = 4680
а) 4242-3242+1042 = 42(42-32+10) = 4220 = 840
б) 1917+1117 = 17(19+11) = 1730 = 510
в) 7379-6739 = 7(379-739) = 7(-360) = -2520
г) 1965+1265-3165 = 65(19+12-31) = 650 = 0
д) 1683+1983-8283 = 83(16+19-82) = 83(-47) = -3881
е) 92718-92717 = 927(18-17) = 9271 = 927
ж) 3652+5452 = 52(36+54) = 52*90 = 4680