Name the property shown by each statement.

1. 8.4=4.8

2. 6.1=6

3. 9+3+20=3+9+20

4. 7+0=7

5. 13+12=12+13

6. 6 * (1*9) = (6*1) * 9

I have no idea what they mean by property. If you could explain what they mean by property.

Most of these problems are the commutative property:

Addition

a + b = b + a

Multiplication

a * b = b * a

and the associative property:

Addition

(a + b) + c = a + (b + c)

Multiplication

(a * b) * c = a * (b * c)

There's also the Identity property:

Addition / Subtraction:

a + 0 = a / a - 0 = a

Multiplication / Division:

a * 1 = a / a / 1 = a