Answer:
(1) False
(2) False
(3). False
(4) False
Step-by-step explanation:
According to the problem, calculation of the given data are as follows,
(1). Given,  149 + 769 = 819
By calculating 149 + 769 = 918  
Hence, False
(2). Given,  556 + 336 = 826
By calculating 556 + 336 = 892  
Hence, False
(3). Given,  458 - 248 = 238
By calculating 458 - 248 = 210  
Hence, False
(4). Given,  658 - 228 = 438
By calculating 658 - 228 = 430  
Hence, False