7th Grade Math Challenge

Simplify the algebraic expression: 3x + 2y - 5x - 4y

• 3x - 4y

• -2x - 2y

• 2x + 5y

• 5x + 2y

What type of transformation is a reflection?

• A reflection is a type of transformation known as a rotation.

• A reflection is a type of transformation known as a flip.

• A reflection is a type of transformation known as a stretch.

• A reflection is a type of transformation known as a translation.

If you roll a fair six-sided die, what is the probability of rolling a 3?

• 1/4

• 1/5

• 1/6

• 1/3

Which of the following numbers is a rational number: 0.5, √2, 3/4, π?

• √2

• 2/3

• 0.333

• 0.5 and 3/4

If y is directly proportional to x, and y = 10 when x = 5, what is the value of y when x = 8?

• 25

• 12

• 16

• 8

Solve for x: 2(x + 3) = 16

• x = 8

• x = 5

• x = 10

• x = 12

What is the sum of the interior angles of a triangle?

• 270 degrees

• 360 degrees

• 90 degrees

• 180 degrees

If a rectangle has a length of 8 cm and a width of 5 cm, what is its area?

• The area of the rectangle is 8 cm / 5 cm = 1.6 square cm

• The area of the rectangle is 8 cm * 5 cm = 40 square cm

• The area of the rectangle is 8 cm + 5 cm = 13 square cm

• The area of the rectangle is 8 cm - 5 cm = 3 square cm

In a survey, 60% of people prefer apples over oranges. If 240 people were surveyed, how many prefer apples?

• 180

• 100

• 220

• 144

If 3/4 of a number is 15, what is the number?

• 20

• 10

• 25

• 30