Show:
addition
Subtract
multiply
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randoms
100

27+20

47

100

20-10

10

100

5x1

5

100

6~3


2


100

14~2

7

200

31+21

52

200

15-2

13

200

8x2

16

200

10~5

2


200

5x5

25

300

50+13

63

300

67-10

57


300

0x0

0


300

20~2

10

300

1x13

13

400

67+10

77

400

41-41

0


400

4x1

4


400

15~3

5

400

40-20

20

500

41+41

82

500

15-13

2

500

10x3

30


500

40~4

10


500

100-4

96