3 digit addition
430+40=
470
640-280=
360
10 more than 130
140
898+25
923
300+270=
570
540-180=
360
100 more than 399
499
760-452
308
520+310=
830
420-170=
250
10 less than 190
180
_____=412+87
499
390+15=
405
450-150=
300
100 less than 325
225
136+_____= 299
163
631+206=
837
180-120=
60
100 more than 587
687
243-199=
44