One more and one less (to 100)

1. 1.
   What is one less than 29?
   a)26b)28c)30d)27
2. 2.
   What is one less than 20?
   a)18b)19c)21d)17
3. 3.
   What is one less than 64?
   a)63b)64c)61d)62
4. 4.
   What is one more than 71?
   a)71b)73c)72d)70
5. 5.
   What is one less than 88?
   a)88b)87c)85d)86
6. 6.
   What is one less than 2?
   a)0b)2c)3d)1
7. 7.
   What is one more than 15?
   a)15b)17c)14d)16
8. 8.
   What is one less than 26?
   a)26b)23c)25d)24
9. 9.
   What is one less than 81?
   a)80b)81c)82d)78
10. 10.
    What is one less than 34?
    a)31b)33c)35d)32
11. 11.
    What is one less than 82?
    a)81b)83c)80d)79
12. 12.
    What is one more than 37?
    a)39b)38c)37d)36
13. 13.
    What is one less than 78?
    a)79b)75c)77d)78
14. 14.
    What is one more than 97?
    a)100b)99c)97d)98
15. 15.
    What is one less than 95?
    a)92b)95c)94d)96
16. 16.
    What is one less than 99?
    a)98b)97c)96d)99
17. 17.
    What is one less than 40?
    a)37b)41c)38d)39
18. 18.
    What is one more than 65?
    a)65b)66c)64d)67
19. 19.
    What is one less than 49?
    a)50b)47c)48d)49
20. 20.
    What is one more than 82?
    a)83b)85c)81d)82

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