1. 直接写出答案

32-16=          13+29=          37+83=          78-28=

42-36=          123+47=         800+222=        543+106=

100-41=         450-190=         365-270=        733+67=

19+11=          5123-1123=       9000-800=       1000-16=

188+112=        560-320=         59+241=         555+444=