Pre-Algebra Midterm Exam

D) 100x

(5x)20 A) 4x C) 25x B) 15x D) 100x

D) -40xy

-10x(4y) A) -40 C) 40x B) 40xy D) -40xy

B) -30

-5 + (-25) A) -20 C) 20 B) -30 D) 30

A) 60ab

-6a (-5) (2b) A) 60ab C) -60ab B) -60a D) 60

B) Associative Property of Multiplication

2 (xy) = (2x) (y) A) Commutative Property of Multiplication B) Associative Property of Multiplication C) Multiplicative Property of Zero D) Multiplicative Identity

B) Associative Property of Addition

31 + (4 + 17) = (31 + 4) + 17 A) Commutative Property of Addition B) Associative Property of Addition C) Substitution Property of Equality D) Additive Identity

B) 25

34 + (-9) A) -43 C) 43 B) 25 D) -25

A) 75

43 + (-18) + 50 A) 75 C) -25 B) 11 D) 111

D) Multiplicative Identity

45 ; 1 = 45 (Pretend the comma is not there) A) Commutative Property of Multiplication B) Associative Property of Multiplication C) Multiplicative Property of Zero D) Multiplicative Identity

B) 40

5 [(46 - 14) / 4] A) 227 C) 13 B) 40 D) 213

D) 27

6 (6) - (12 - 3) A) -54 C) 3 B) -18 D) 27

B) -462

6(7)(-11) A) -42 C) 42 B) -462 D) 462

D) -21

8 + (-20) + (-9) A) -12 C) -3 B) 19 D) -21

B) 17 - 10

How many more pencils does Chet have, if Benito has ten & Chet has 17? A) 10 x 17 C) 17 / 10 B) 17 - 10 D) 10 + 17

B) x + 16 = 31; x = 15

The sum of a number and 16 is 31. A) 16 + 31 = x; x = 47 B) x + 16 = 31; x = 15 C) x + 16 = 31; x = 47 D) 16 + 31 = x; x = 15

B) 11 + 20 - x

eleven increased by the difference of twenty and a number A) 11 + x - 20 C) 11 x 20 - x B) 11 + 20 - x D) 11 + 20 / x

C) 5 (X x 13)

five times the product of a number and thirteen A) 5 (x / 13) C) 5 (X x 13) B) 5 (x + 13) D) 5 + (X x 13)