Adding 2 digits
Subtracting 2 digits
Adding 1 digits
Subtracting 1 digits
Mix
100

10+23

33

100

50-10

40

100

5+5

10

100

5-3

2

100

10-9+5

6

200

22+26

48

200

40-20

20

200

2+5


7

200

6-4

2

200

5-5+10

10

300

20+10+33

63

300

66-20

46

300

4+1+2

7

300

5-2-1

2

300

10-5+2+1

8

400

50+66

116

400

100-55

45

400

5+6+2

13

400

6-4-2

0

400

6+5+5-6

10

500

10+20+30+12

72

500

100-10-20

70

500

5+7+1+9+8

30

500

9-2-5

2

500

10-9+2-1+6

8

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