Introduction Algebra

What is the missing number?

___ − 2 = 4

• 5

• 4

• 2

• 6

x+5=12

What is the value of x

• 2

• 7

• 10

• -7

Which equation is equivalent to :

"The sum of three and five is equal to eight"

• 3+5=x

• 3+4=7

• 3+5=8

• 3+6=9

Which is the equivalent equation of :

"The product of six and seven is equal to forty-two"

• 6x7=54

• 6x7=42

• 6x-7=-42

• 6x7=-42

Which is the mathematical expression for:

"the difference of n and one"

• n-1=2

• n-1

• n+1

• n*1

Which is the equivalent expression for:

"the quotient of x and y"

• xy

• x+y

• x/y

• x-y

Determine if this is an expression or an equation:

16−6=10

• equation

• expression

Determine if this is an expression or an equation:

y+8=40

• equation

• expression

Which is equivalent expression of:

2n+3

• thrice of 2 added to 3

• twice of 3 added to 2

• twice of 2 added by 3

• twice of n added by 3

Which is the correct expression for:

2(x+4)

• twice the sum of x and 4

• twice the difference of x and 4

• twice the product of x and 4

• twice the sum of 2 and 4