This document explains the concepts of "one less" and "one more" when referring to numbers. One less means the number that comes before a given number. One more means the number that comes after a given number. It provides examples of writing the number that is one less or one more than various given numbers, as well as examples of filling in the missing numbers for "one less" and "one more" sequences.

3. ONE LESS, ONE MORE

4. ONE LESS
Means that a number
comes before the given
number

5. 1 2
3
4
5

6. ____, 5

7. 4
3
____, 4

8. 3
2
___, 3

9. 2
1
___, 2

10. 12
?
11

11. ___, 9
9 - 1 = 8
8

12. ___, 13 ___, 23
13 -1=12 23- 1=22
12 22

13. __, 14 __, 28 ___, 75

14. ONE MORE
Means that a number
comes after the given
number

16. 1
2

17. 20
21

18. 21
22

19. 22
23

20. 20
21
1

21. 21
22
1
22

22. 13, __
47,__
60,__

23. ONE LESS
___, 64
___, 19
___, 70 ___, 92
___, 86

24. ONE MORE
20__ 34,__
89,__ 76,__ 57,__

25. Write the number that comes before and after
the given number.
_____ 22 _____ _____ _____ _____ _____
_____ _____ _____ _____ _____ _____
83 55
48 79 94