Show:
Addition
Subtraction
3-Digit Addition
Surprise!
100
93 + 27=
120
100
97-18=
79
100
296+370=
666
100

349-156=

193

200
54 + 76=
130
200
83-47=
36
200
511+396=
907
200

579+219=

798

300
28+96=
124
300
92-63=
29
300
393+371=
764
300

456+328=

784

400
47+56=
103
400
73-56=
17
400
674+190=
864
400

99-82

17

500
39+68=
107
500
64-38=
26
500
754+197=
951
500

987+789

1776