1. lesson 2.notebook August 21, 2012
Lesson 2:
Match the following vocabulary
to the proper number!
15 + 23 = 38 divisor
addend addend sum sum
minuend
38 - 23 = difference
15 factor
difference
minuend subtrahend
dividend
11 * 5 = 55
factor quotient
factor product product
55 5 = 11 addend
quotient subtrahend
dividend divisor
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2. lesson 2.notebook August 21, 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 21, 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 21, 2012
C) (8 + 6) + 4 = 8 + (6 + 4)
Associative Property of Addition
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5. lesson 2.notebook August 21, 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 21, 2012
F) Simplify: 36 - 87
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7. lesson 2.notebook August 21, 2012
Find the unknown & check your answer.
G) 12 + m = 48 CHECK:
H) 12n = 48 CHECK:
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