single digits
double digits
3 digit
Addition
Subtraction
100

1x1

1

100

10x10

100

100

100x100

10,000

100

10,000+10,000

20,000

100

200-200

0

200

9x9

81

200

20x10

200

200

200x200

40,000

200

25,000,000+25,000,000

50,000,000

200

300-50

250

300

8x7

56

300

30x30

900

300

300x300

90,000

300

40+40

80

300

450,000-20

449,980

400

6x6

36

400

40x40

1600

400

400x400

160,000

400

30+300

330

400

800-90

710

500

5x5

25

500

50x50

2500

500

500x500

250,000

500

500,000+500,000

1,000,000

500

700-60

640