Classify the number –12
Integer
Solve: 2x + 3 = 9
x = 3
What is 20% of 50?
10
Name the property: 7 + 0 = 7
Identity Property (Multiplication)
Evaluate: –5 + 9
4
Classify the number 0.
Whole and integer
Solve: 3(x – 2) = 12
x = 6
25% of a number is 40. What is the number?
160
Name the property: 5 × 1 = 5
Identity property (multiplication)
Evaluate: –7 – 3
-10
Classify √49.
Rational (equals 7)
Solve: 5x – 7 = 18
x = 5
A $60 shirt is discounted 30%. What is the sale price?
$42
Name the property: 3 × 4 = 4 × 3
Commutative Property of Multiplication
Evaluate: (–4)(–6)
24
Classify √7.
Irrational
Solve: x/4 = 3
x = 12
A laptop costs $500, and the tax rate is 7%. What is the total cost?
$535
Name the property: (2 + 3) + 4 = 2 + (3 + 4)
Associative Property of Addition
Evaluate: 15 ÷ (–3)
-5
Classify 4.21.
Rational
Solve 2x + 3y = 6 for y.
y = –(2/3)x + 2
A store increases a $40 item by 25%. What is the new price?
$50
Name the property: 6(2 + 5) = 6·2 + 6·5
Distributive Property
Evaluate: –2(–3)(4)
24