1. In lesson 2, we learn that an algebraic expression can only be evaluated if there is a specified numerical value for each variable in the expression.
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True
False
2. We are introduced to the terms commutative and distributive properties in lesson 3 and they are listed again in lessons 4 and 5.
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True
False
3. Like terms (lesson 3) are
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terms whose variables are the same
terms whose exponents are the same
terms whose variables and exponents are the same
not able to be added or subtracted
4. Identify the correct definitions and models. Select all that apply.
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Commutative property of addition (lessons 3 & 6): the property of operations that says addends can be in any order and it will NOT change the sum; a + b = b + a
Distributive property of multiplication over addition (lessons 3 & 4): the property of operations that says multiplying the sum of two or more addends by a number is the same as multiplying the number by each of the addends individually and adding the products; a(b + c) = ab + ac and ab + ac = a(b + c)
Identity Property of Multiplication (lesson 6) – the property of operations that says that the product of any number and 1 is that same number; a ∙ 1 = a
5. Select the correct definitions. Select all that apply.
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coefficient – a number used to multiply a variable in an algebraic expression
constant – a term that can be changed in an equation
factor – a number that divides another number with a remainder of zero
greatest common factor – largest number that is a factor of two or more numbers, often abbreviated GCF
prime number – a number with only one factor: 1
6. I submitted a picture of something I enjoy to my 7A Unit 6_Algebraic Expressions Sample Work Drop Box.
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Yes
No
Not yet, but I will right now.