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Even and odd
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An even number is an integer that can be evenly divided by 2, un entier pair. For example,
6 = 3 + 3 = 2 × 3, so 6 is an even number. An integer that is not even is called an odd
number, un entier impair. For example, 7 = 2 × 3 + 1, so 7 cannot be divided evenly by 2
and thus is an odd number.
0. Is 0 even or odd?
1. Label each of these numbers as even or odd: 1 2
Explain the pattern you see.
3 4
5 6
2. Label each of these numbers as even or odd: 1 3
Explain the pattern you see.
5 7
9 11
3. Label each of these numbers as even or odd: 2 4
Explain the pattern you see.
6 8
10 12 14
16 18 20
4. Label each of these numbers as even or odd: 0 3
Explain the pattern you see.
6 9
12 15 18
21 24 27
@dajmeyer
1
7 8
9 10
13 15 17 19
5. If you add two even numbers is the result even or odd? Always? Why?
If you add two odd numbers is the result even of odd? Always? Why?
If you add and even and an odd number is the result even or odd? Always? Why?
6. Label each of these numbers as even or odd: 0 1
What is the next number in this sequence?
Explain the pattern you see.
1 2
3 5
7. Label each of these numbers as even or odd: 0 1
What is the next number in this sequence?∗
Explain the pattern you see.
2 5
12 29 70
∗
These are called the Pell numbers.
@dajmeyer
2
8 13 21
34 55
8. Fill in the missing numbers in this pattern (Pascal’s triangle):
Now color all the hexagons containing odd numbers.
9. Color these hexagons using the same rule as above:
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3
10. Now make up your own mathematical coloring pattern:
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4