Show:
+1
+2
+3
+5
+10
100

1+1

2

100

3+2

5

100

3+4

7

100

5+5

10

100

10+5

15

200

8+1

9

200

10+2

12

200

9+3

12

200

12+5

17

200

10+10

20

300

12+2

14

300

12+2

14

300

13+3

16

300

16+5

21

300

20+10

30

400

i have one cat and four dogs 

5 dogs and cats

400

20-1

19

400

54+3

57

400

1 million + 1 million

2,000,000

400

4 ghosts subtracted from 3 carrots

1 half carrot/ goat