Pre-Algebra Unit 1 Review

Unit 1 Review 1)Name the property demonstrated. a) a + b = b + a b) a(b + c) = ab + ac

Unit 1 Review 1)Name the property demonstrated. a) a + b = b + a Commutative property of addition b) a(b + c) = ab + ac distributive property Answer

Unit 1 Review 2)Name the property demonstrated. a) ab = ba b) a + (b + c) = (a + b) + c

Unit 1 Review 2)Name the property demonstrated. a) ab = ba commutative property of multiplication b) a + (b + c) = (a + b) + c associative property of addition Answer

Unit 1 Review 3)Simplify. a) 5x + 3y + 3x + 2y

Unit 1 Review 3)Simplify. a) 5x + 3y + 3x + 2y = 8x + 5y Answer

Unit 1 Review 4)Simplify. a) 4 + 6(a + 2) + 3a

Unit 1 Review 4)Simplify. a) 4 + 6(a + 2) + 3a = 9a + 16 Answer

Unit 1 Review 5)Solve for x. a) x + 19 = 30 b) 38 + x -18 = 500

Unit 1 Review 5)Solve for x. a) x + 19 = 30 x = 11 b) 38 + x -18 = 500 x = 480 Answer

Unit 1 Review 6)Solve for y. a) 8y = 96 b) y / 12 = -24

Unit 1 Review 6)Solve for y. a) 8y = 96 y = 12 b) y / 12 = -24 y = -288 Answer

Unit 1 Review 7)Write an equation for the problem and solve. a) Twice a number increased by 28 is 54.

Unit 1 Review 7)Write an equation for the problem and solve. a) Twice a number increased by 28 is 54. 2n + 28 = 54 n = 13 Answer

Unit 1 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?

Unit 1 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. Answer

Unit 1 Review 9)Solve for n. 2│n│ = 10

Unit 1 Review 9)Solve for n. 2│n│ = 10 n = ±5 Answer