Plus and subtraction
times
100

whats 56+156=

212

100

3x34

102

200

3456-453

3003

200

34x3

102

300

56784+3456728

3513512

300

102x3,459

352818

400

34-45

-11

400

45x678

30510

500

56784-12345=

44439

500

123456789-123456781

8