Addition 1
23 + 16 =
39
31 + 14 =
45
67 - 13 =
54
84 - 21 =
63
45 + 34 =
79
76 + 22 =
98
89 - 43 =
46
97 - 55 =
42
137 + 223 =
360
458 + 121 =
579
754 - 323 =
431
849 - 432 =
417
546 + 297 =
843
458 + 329 =
787
873 - 256 =
617
784 - 235 =
539