This document provides vocabulary and examples for lesson 2 on basic math operations. It defines terms like sum, minuend, subtrahend, difference, factor, product, quotient, dividend and divisor. It also lists properties for addition and multiplication like commutative, associative, identity and zero properties. Examples are given to illustrate these properties and multi-step word problems are presented to solve for unknown values.

1. lesson 2.notebook August 20, 2012
Lesson 2:
Match the following vocabulary
to the proper number!
15 + 23 = 38
sum divisor
addend sum
addend minuend
factor
difference
38 - 23 = 15 dividend
minuend subtrahenddifference
product quotient
11 * 5 = product
55 addend
factor factor subtrahend
dividend
55 5 = 11
dividend divisor quotient
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2. lesson 2.notebook August 20, 2012
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
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3. lesson 2.notebook August 20, 2012
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
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4. lesson 2.notebook August 20, 2012
C) (8 + 6) + 4 = 8 + (6 + 4)
Associative Property of Addition
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5. lesson 2.notebook August 20, 2012
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?
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6. lesson 2.notebook August 20, 2012
F) Simplify: 36 - 87
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7. lesson 2.notebook August 20, 2012
Find the unknown & check your answer.
G) 12 + m = 48 CHECK:
H) 12n = 48 CHECK:
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