68.
35628 + 6774 = 42402,
9339 + 23456 = 32795,
53460 + 7985 = 61445,
1928765 + 8593769 = 10522534,
69.
37 + 23 + 18 = 60 + 18 = 78,
16 + 38 + 34 = 50 + 38 = 88,
301 + 199 + 234 = 500 + 234 = 734,
847 + 526 + 153 = 1000 + 526 = 1526,
70.
3313 + 88 = 3313 + 87 + 1 = 3400 + 1 = 3401,
94 + 628 = 94 + 6 + 622 = 100 + 622 = 722,
166 + 255 = 121 + 45 + 255 = 121 + 300 = 421,
2088 + 233 = 2088 + 12 + 221 = 2100 + 221 = 2321