Вычисли наиболее удобным способом:
(56 + 16) + 14
(40 + 3) + (30 + 2)
71 + 97 + 429 + 3
(68 + 85) − 75
(327 + 36) − 327
(178 + 619) − 219
869 − (769 + 45)
412 − 93 − 7
(56 + 16) + 14 = (56 + 14) + 16 = 70 + 16 = 86
(40 + 3) + (30 + 2) = (40 + 30) + (3 + 2) = 70 + 5 = 75
71 + 97 + 429 + 3 = (71 + 429) + (97 + 3) = 500 + 100 = 600
(68 + 85) − 75 = 68 + (85 − 75) = 68 + 10 = 78
(327 + 36) − 327 = (327 − 327) + 36 = 0 + 36 = 36
(178 + 619) − 219 = 178 + (619 − 219) = 178 + 400 = 578
869 − (769 + 45) = (869 − 769) + 45 = 100 + 45 = 145
412 − 93 − 7 = 412 − (93 + 7) = 412 − 100 = 312