77 plus 76 plus 69 plus 56 is equal to 278.
Mean = average; so (77+10)/2 = 43.5 = mean of 77 plus 10.
77 + 1234 = 1,311
77 + 89 = 166
10 + 77 = 87
76+77=153
77 + 84 = 161
84 + 96 + 72 + 77 + 91 = 420
51 percent plus 77 percent = 128 percent 51% + 77% = 128%
9 + 77 + 865 − 800 + 567543 + 8,765,444,443,322,345,678,899,999,987,654,433,222,234,678,999,887,766,555 = 8,765,444,443,322,345,678,899,999,987,654,433,222,234,678,999,888,334,249
44 + 77 = 121
15 + 77 = 92