2_4 Multiply Integers [4] – Multiply two integers with
values from -9 to 9.
Find the product.
Your Answer: 21
Comment: Find the product.
The product of two numbers with the same sign is a positive number.
2_4 Multiply 3 Integers [4] – Multiply three integers
with values from - 9to 9.
Find the product.
Your Answer: 126
Comment: Multiply from left to right.
The product of two numbers with the same sign is a positive number.
The product of two numbers with opposite signs is a negative number.
2_4 Multiply var ex pressions A [4] – Multiply variable
expressions such as xy - yz
x = - 6,
y = - 1,
and z = - 4
Evaluate the expression: yz - 6x
Your Answer: 40
Comment:
2_4 Multiply Var Express Powers B [3] – Multiply
variable expressions with powers such as x 2 + 3x.
Evaluate the expression when x = - 6
Your Answer: 72
Comment: Evaluate the expression when x = - 6
2_5 Dividing Integers [4] – Dividing two integers.
Quotient is an integer.
Divide:
Your Answer: 7
Comment: Divide:
Dividing with the same sign is a positive quotient.
Dividing with opposite signs is a negative quotient.
2_5 Mean [4] – Find the mean of a data set with 4 to 7
members. Mean is an integer value.
Find the mean of the data:
Your Answer: - 2
Comment: Find the mean of the data:
The mean or average is the sum of the values divided by the number of values.
2_5 Divide Var Expressions [4] – Divide expressions
with variables. Quotient is an integer.
Evaluate the expression when x = 12 and y = 4.
Your Answer: 36
Comment: Evaluate the expression when x = 12 and y = 4.
2_6 Property Matching – Match an expression with
commutative, associative, or identity
properties of addition and multiplication.
All the items matched correctly.
| Match |
Your Choice |
 |
| Associative property of addition |
(p + 6) + 19 = p + (6 + 19) |
 |
| Identity property of multiplication |
 |
 |
| Commutative property of
multiplication |
 |
 |
| Associative property of
multiplication |
 |
 |
| Commutative property of addition |
 |
 |
| Identity property of addition |
 |
 |
Comment:
Commutative properties are a change in the order of operations . Example: a +
b = b + a.
Associative properties are a change in the group . Example: (a + b) + c = a + (b
+ c)
The additive identity is 0. a + 0 = a
The multiplicative identity is 1. b • 1 = b
2_6 Using Add. Properties [3] – Using properties to
simplify addition / subtraction .
Evaluate the expression:
26 + 9 + 34
Your Answer: 69
Comment: Evaluate the expression:
26 + 9 + 34
Use the commutative property of addition
26 + 34 + 9 =
60 + 9 =
69
2_6 Using Mult Properties[3] – Using properties to
simplify multiplication.
Evaluate the expression:
5 • 9 • 4
Your Answer: 180
Comment: Evaluate the expression:
5 • 9 • 4
Change the order of the multiplication using the commutative property.
5 • 4 • 9
20 • 9
180
2_7 Distributive Prop A [4] – Distribute a(x + b) with
a positive or negative.
Use the distributive property to simplify the expression:
- 5(x + 2)
Your Answer: - 5x - 10
Comment: Use the distributive property to simplify the expression:
2_7 Combine Like Terms A [4] – Combine like terms of
binomials ax bx.
Simplify by combining like terms:
3x - 2x
Your Answer: x
Comment: Simplify by combining like terms:
2_7 Combine Like Terms B [6] – Combine like terms of
polynomials with four terms.
Simplify each expression:
Your Answer: - 5z +1
Comment: Simplify each expression:
Combine like terms.
2_7 Dist and Comb Like Terms C [6] – Use the
distributive property and combine like terms.
Simplify each expression:
5x + 7(x + 7) - 8
Your Answer: 12x+41
Comment: Simplify each expression:
5x + 7(x + 7) - 8
Distribute.
5x + 7x + 49 - 8
Combine like terms.
12x + 41
2_8 Match Coordinate Points [2] – Match the coordinate
point with a labeled point on a
graph.
All the items matched correctly.
2_8 Find Coordinate Points [12] – Given a point on a
graph, write the coordinate pair (x, y).
Write the coordinates for point B on the graph.
Your Answer: (0,-1)
