Question

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1 - 1 = ?

2 + 9 = ?

2 + 8 = ?

9 - 9 = ?

Answer 1

1-1=0
2+9=11
2+8=10
9-9=0

Answer 2

1 - 1 = 0

2 + 9 = 11

2 + 8 = 10

9 - 9 = 0

Answer 3

1-1=9-9
2+9=2+8+1
2+8=2+9+1
9-9=1-1

Answer 4

1-1=0

2+9=11

2+8=10

9-9=0

Answer 5

1 - 1 = 0

2 + 9 = 11

2 + 8 = 10

9 - 9 = 0

Answer 6

1 - 1 = 0

2 + 9 = 11

2 + 8 = 10

9 - 9 = 0

Answer 7

1-1=0

2+9=11

2+8=10

9-9=0

Answer 8

0

11

10

0

Answer 9

1 - 1 = 0

2 + 9 = 11

2 + 8 =10

9 - 9 = 0

Answer 10

1-1=0

2+9=11

2+8=10

9-9=0

Answer 11

1 -1 =0

2 + 9 = 11

2 + 8 = 10

9 - 9 = 0

Answer 12

1-1 = 0 

2+9=11

2+8=10

9-9=0

Answer 13

0

11

10

0