Show:
Adding 2 on 2
Adding 3 on 3
Sub 2 on 2
Sub 3 on 3
Bonus
100
 27

+13

  

=40

100

120+436

=556

100

31-27

=4

100

333-222

=111

100

564-222

=342

200

36+12

=48

200

355+496

=851

200

61-49

=12

200

694-125

=569

200

264+634

=898

300

51+11

=62

300

687+135

=822

300

64-52

=12

300

854-654

=200

300

954-954

=0

400

19+45

=64

400

631+631

=1262

400

84-29

=55

400

888-621

=267

400

851+851

1702

500

66+24

=90

500

854+999

=1853

500

99-81

=18

500

765-231

=534

500

954-651+36

=339