addition
subtraction
????????
???????
100

10+70=?

what is 80

100

50-40

10

100

50x4

200

100

25x10

250

200

40+66

106

200

500-410

90

200

25+25+25+25+25x0

0

200

555+333

888

300

90+11

101

300

600-400-200

0

300

marcus+40

40 marcus

300

50 Marcus-25 Marcus

25 Marcus

400

44+66

110

400

4000-3999

1

400

60000+60000

120000

400

50000+30000

80000

500

50+1 Marcus=

51 marcus

500

44-40

4

500

10000+10000

20000

500

50000+50000

100000

M
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u