lesson 2.notebook August 16, 2013

Lesson 2:Match the following vocabulary to the proper number!

15 + 23 = 38

38 - 23 = 15

11 * 5 = 55

55 5 = 11

addend

summinuend

difference

subtrahend

quotient

factor

product

divisor

dividend

dividend

product

sum

quotientdivisor

difference

factor

addend

minuend subtrahend

lesson 2.notebook August 16, 2013

Properties:*Commutative(add)-->3 + 5 = 5 + 3*Associative(add)-->2 + (3 + 4) = (2 + 3) + 4*Identity (add)-->10 + 0 = 10

*Identity (mult)-->10 1 = 10*Zero (mult)-->10 0 = 0*Commutative (mult)-->4 5 = 5 4*Associative (mult)-->2 (3 4) = (2 3) 4

lesson 2.notebook August 16, 2013

Examples (Lesson 2)Name each property illustrated in examples a-d.

A) 4 x 1 = 4

Identity Property of Multiplication

B) 4 + 5 = 5 + 4

Commutative Property of Addition

lesson 2.notebook August 16, 2013

C) (8 + 6) + 4 = 8 + (6 + 4)

Associative Property of Addition

lesson 2.notebook August 16, 2013

D) 0 x 5 = 0

Zero Property of Multiplication

E) What is the difference when the sum of 5 and 7 is subtracted from the product of 5 and 7?

lesson 2.notebook August 16, 2013

F) Simplify: 36 - 87

lesson 2.notebook August 16, 2013

Find the unknown & check your answer.G) 12 + m = 48 CHECK:

H) 12n = 48 CHECK: