Subtraction without Regrouping
9-3=
6
31-9=
22
40-15=
25
25+14=
39
123+456=
579
32-21=
11
85-47=
38
80-52=
28
47+26=
73
257+45=
302
48-22=
26
488-229=
259
450-128=
322
88+19=
107
803+187=
990
500-300=
200
851-291=
560
404-122=
282
47+74=
121
975+966=
1,941
496-133=
363
521-138=
383
500-136=
364
98+99=
197
999+999=
1,998