Beat the Computer Drill Properties Beat the Computer Drill

Directions A slide will appear showing an equation which illustrates a property. Say the property aloud before the computer can answer (6 sec). You will hear a sound when the slide changes.

a + b = b + a

Commutative Property for Addition a + b = b + a

ab + ac = a(b + c)

Distributive Property ab + ac = a(b + c)

a  b = b  a

Commutative Property for Multiplication a  b = b  a

a  1 = a

Multiplicative Identity Property a  1 = a

a + 0 = a

Additive Identity Property a + 0 = a

(a  b)  c = a  (b  c)

Associative Property for Multiplication (a  b)  c = a  (b  c)

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

Associative Property for Addition (a + b) + c = a + (b + c)

a + (-a) = 0

Additive Inverse Property a + (-a) = 0

a(b + c) = ab + ac

Distributive Property a(b + c) = ab + ac

a  0 = 0

Multiplicative Property of Zero

1 a  = 1 a

Multiplicative Inverse Property 1

If x = b, then x + c = b + c

Addition Property of Equality If x = b, then x + c = b + c

If x = b, then x  c = b  c

Multiplication Property of Equality If x = b, then x  c = b  c

a = a

Reflexive Property of Equality a = a

If a = b, then b = a

Symmetric Property of Equality If a = b, then b = a

If a = b, and b = c, then a = c

Transitive Property of Equality If a = b, and b = c, then a = c

If x = 3, then 5x = 15

Substitution Property of Equality If x = 3, then 5x = 15

Good Job!