Show:
Adding 2-digits
Adding 3-digits
Adding 4-digits
Adding 4-3 digits
Subtration
100

12+12

24

100

100+250

350

100

1652+3275

4927

100

5286+505

5791

100

10-5

5

200

25+14

39

200

312+200

512

200

2634+3536

6170

200

7914+466

8380

200

13-3

10

300

13+23

36

300

155+238

393

300

4438+3121

7559

300

7653+273

7926

300

11-4

7

400

50+32

82

400

724+137

861

400

4846+3372

8218

400

8615+426

9041

400
24-45

-21

500

96+85

181

500

546+436

982

500

5286+3524

8809

500

7624+365

7989

500

300-25

275