Question

Вычисли рационально. Помогите.23+89+77. 44+78+56 223+389+277. 144+578+256. 123+289+177. 544+278+156.

Answer 1

23+89+77 = (23+77)+89 = 100+89 = 189

44+78+56 = (44+56) + 78 = 100+78 = 178

223+398+277 = (223+277)+398 = 500+398 = 898

144+578+256 = (144+256) + 578 = 400+578=978

123+289+177 = (123+177)+289 = 300 + 289 = 589

544+278+156 = (544 + 156) + 278 = 700 + 278 = 978

Answer 2

44+56+78=178
223+277+388=898
144+256+578=978
123+177+289=589
544+156+278=978

Answer 3

To compute the sum of the given rational numbers, let's add them up:

23 + 89 + 77 = 189 44 + 78 + 56 = 178 223 + 389 + 277 = 889 144 + 578 + 256 = 978 123 + 289 + 177 = 589 544