Download Chapter 2 review

Pre-Algebra
Chapter 2 Review
Chapter 2 Review
1) Name the property demonstrated.
a) a + b = b + a
b) a(b + c) = ab + ac
Chapter 2 Review
1) Name the property demonstrated.
a) a + b = b + a
Commutative property of addition
b) a(b + c) = ab + ac
distributive property
Chapter 2 Review
2) Name the property demonstrated.
a) ab = ba
b) a + (b + c) = (a + b) + c
Chapter 2 Review
2) Name the property demonstrated.
a) ab = ba
commutative property of multiplication
b) a + (b + c) = (a + b) + c
associative property of addition
Chapter 2 Review
3) Simplify.
a) 5x + 3y + 3x + 2y
Chapter 2 Review
3) Simplify.
a) 5x + 3y + 3x + 2y = 8x + 5y
Chapter 2 Review
4) Simplify.
a) 4 + 6(a + 2) + 3a
Chapter 2 Review
4) Simplify.
a) 4 + 6(a + 2) + 3a = 9a + 16
Chapter 2 Review
5) Solve for x.
a) x + 19 = 30
b) 38 + x -18 = 500
Chapter 2 Review
5) Solve for x.
a) x + 19 = 30
x = 11
b) 38 + x -18 = 500
x = 480
Chapter 2 Review
6) Solve for y.
a) 8y = 96
b) y / 12 = -24
Chapter 2 Review
6) Solve for y.
a) 8y = 96
y = 12
b) y / 12 = -24
y = -288
Chapter 2 Review
7) Write an equation for the problem and solve.
a) Twice a number increased by 28 is 54.
Chapter 2 Review
7) Write an equation for the problem and solve.
a) Twice a number increased by 28 is 54.
2n + 28 = 54
n = 13
Chapter 2 Review
8) Write an equation for the problem and solve.
a) Terry’s age is half Bobby’s age. The sum
of their ages is 36. How old are they?
Chapter 2 Review
8) Write an equation for the problem and solve.
a) Terry’s age is half Bobby’s age. The sum
of their ages is 36. How old are they?
Terry’s age is a.
Bobby’s age is 2a
a + 2a = 36
a = 12
So, Terry is 12 and Bobby is 24.
Chapter 2 Review
9) Solve for n.
2│n│ = 10
Chapter 2 Review
9) Solve for n.
2│n│ = 10
n = ±5