property of multiplication

Question

find the missing number and name the property of multiplication used.

_1. 18x_=15x18

_2. 1534x_=0

_3. 6x(7+8)=6x_+6x8

_4. (12x_)x20=20x(12x16)

_5. 254x1=_

_6. 15x(6+4)=_x6+_x4

_7. (25x16)x72=25x(_x72)

Answer 1

_1. 18x15=15x18, commutative of multiplication

_2. 1534x0=0, multiplicative of zero

_3. 6x(7+8)=6x7+6x8, distributive of multiplication over addition

_4. (12x16)x20=20x(12x16), commutative of multiplication

_5. 254x1=254, multiplicative identity of 1.

_6. 15x(6+4)=15x6+15x4, distributive of multiplication over addition

_7. (25x16)x72=25x(16x72), associative of multiplication