Solve on paper. Then answer.
59 + 98 = 87 + 86 = 68 + 79 =
485 − 230 = 677 − 94 = 350 + 128 =
938 − 19 = 222 − 139 = 723 − 260 =
803 − 145 = 167 + 90 = 502 − 218 =
900 − 423 = 198 + 567 = 801 − 699 =