H&M: Even and odd

(10 - 7 = 3) (6 - 1 = 5) (8 - 3 = 5)

This proves that:

• the difference of an even and odd number will always be odd

• the difference of an even and odd number will always be even

• the difference of two even numbers will always be odd

• the difference of two odd numbers will always be odd

The sum of three odd numbers will always be:

(test it for yourself)

• Even

• Odd

Answer explanation

1+1+1 = 3

3+5+7=15

3+3+3=9

5+5+5=15

The sum of three odd numbers will AWAYS be odd

Numbers that cannot be divided into two equal groups are:

• Even

• Odd

• Prime

• Composite

Answer explanation

Do you know what I find odd?

Numbers that are not divisible by two.

(7 - 3 = 4) (9 - 3 = 6) (11 - 5 = 6)

This proves that:

• the difference of an odd and even number will always be even

• the difference of an odd and even number will always be odd

• the difference of two odd numbers will always be even

• the difference of two odd numbers will always be odd

(3 + 3 = 6) (5 + 7 = 12) (1 + 9 =10)

This proves that:

• the sum of two even numbers will always be even

• the sum of two odd numbers will always be odd

• the sum of two odd numbers will always be even

• the sum of two even numbers will always be odd

The sum of three even numbers will always be:

(test it for yourself)

• Even

• Odd

Answer explanation

2+2+2 = 6

2+4+6= 12

4+4+4= 12

The sum of three even numbers will ALWAYS be even

The difference of an odd and even number will always be:

(test it for yourself)

• Even

• Odd

Answer explanation

5-2=3

7-2=5

9-4=5

The difference of an odd and even number will ALWAYS be ODD

Numbers that CAN be divided by 2 are:

• EVEN

• ODD

• PRIME

• COMPOSITE

Numbers that end in 1, 3, 5, 7, and 9 are:

• EVEN

• ODD

• PRIME

• COMPOSITE

The SUM of two even numbers will always be:

(test it for yourself)

• Even

• Odd

Answer explanation

2+2=4

4+6=10

4+4=8

The sum of two even numbers will ALWAYS be EVEN