Finding Unknown Variables

What is the value of the unknown number in this equation?
* x 7 = 35

• 245
• 5
• 7
• 42

Which fact can help you answer this equation?
72 ÷ ℵ = 9

• 9 ÷ 72 = ℵ
• 72 x 9 = ℵ
• 9 x 72 = ℵ
• 9 x ℵ = 72

What unknown value completes this equation?
8 x 3 x 2 = 6 x ___

• 8
• 3
• 2
• 6

What unknown value makes this equation true?
4 x 3 = ___ x 4

• 7
• 4
• 12
• 3

What is an equation?

• An equation is a math sentence with an equals sign.
• An equation is any math problem.
• An equation has an unknown. 
• An equation is a multiplication sentence.

What is the value of B in this equation?
B ÷ 2 = 8

• 10
• 6
• 16
• 4

What should you do to solve for the unknown in this equation?
56 ÷ ₼ = 7

• Multiply 56 and 7
• Add 56 and 7
• Divide 56 and 7
• Subtract 56 and 7

Solve for the unknown: 
20 = ___ x 4

• 5
• 24
• 80
• 16

What is the unknown in this equation?
6 x 3 = 3 x ___

• 18
• 6
• 9
• 21

9 ÷ __ = 9

• 81
• 9
• 72
• 1