Khan Academy Algebra

What is the algebraic expression for                  "the sum of n and 9"?

• n - 9
• n + 9
• n/9
• 9n

Tags

CCSS.6.EE.A.2A

What is an algebraic                     expression for                 "the difference of r and 3"?

• r/3
• r + 3
• r - 3
• 3r

Tags

CCSS.6.EE.A.2A

What word phrase can you use to represent "5x + 2"?

• five times the sum of a number x and two
• two times the sum of a number x and five
• a number x times the sum of five and two
• the sum of five times a number x and two

Tags

CCSS.7.EE.A.2

CCSS.HSA.SSE.A.2

Evaluate u + xy, for u = 18 , x = 10 , and y = 8.

• 188
• 36
• 98
• 224

Tags

CCSS.6.EE.A.2C

Which property is illustrated by this statement.
8 + 8.3 = 8.3 + 8

• Inverse Property of Multiplication
• Commutative Property of Additon
• Inverse Property of Addition
• Associative Property of Addition

Tags

CCSS.7.NS.A.1D

Simplify
(1/3)(21m + 27)

• 63m + 9
• 7m + 9
• 7m + 81
• 7m + 27

Tags

CCSS.6.EE.A.3

Simplify
1.7m² + 6.5n - 4n + 2.5m² - n

• 4.2m² + 1.5n
• 4.2m² - 1.5n
• 1.5m² - 4.2n
• 1.5m² + 4.2n

Tags

CCSS.7.EE.A.1

Is x = 1 a solution of the equation
2 - 8x = -6?

• yes
• no

Tags

CCSS.6.EE.B.5

Solve: -n + 8 = -3(n - 4)

• All real numbers
• -1
• 2
• -7

Solve for p.
5p - 14 = 8p + 4

• -6
• -10/3
• 18/13
• 4