78 + 89 + 167 + 897 + 78 = 1309
167 ■
87+42+78 = 207
141.6
The total sum is 78
167 + 78 = 245
nothing
11 + 67 = 78
167
The sum of 67 and 78 is 145.
A reasonable estimate of the sum of 78 and 119 is 197.
78+78-:(85)/(78)+7,879=1405
78 + 85 = 163