OST 7th grade Math review

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

• -5x + 6y

• -2x + 6y

• x + 6y

• -2x + 2y

Tags

CCSS.7.EE.A.1

If a rectangle has a length of 8 cm and a width of 4 cm, what is its area?

• 28 square cm

• 16 square cm

• 12 square cm

• 32 square cm

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Solve the inequality: 2x + 5 < 17

• x = 6

• x > 6

• x < 6

• x < 5

Tags

CCSS.7.EE.B.4B

Calculate the scale factor if a small triangle has sides of length 4 cm, 6 cm, and 8 cm, and a similar larger triangle has sides of length 8 cm, 12 cm, and 16 cm.

• 3

• 5

• 4

• 2

Tags

CCSS.7.G.A.1

Write an equation to represent the statement: 'The sum of a number and 5 is equal to 12.'

• x - 5 = 12

• x + 7 = 12

• x + 5 = 12

• x * 5 = 12

Tags

CCSS.7.EE.B.4

If a bag contains 3 red marbles, 2 blue marbles, and 5 green marbles, what is the ratio of red marbles to the total number of marbles?

• 2/5

• 5/10

• 3/10

• 1/3

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Find the value of x in the equation: 2(x + 3) = 16

• 10

• 5

• 7

• 3

Tags

CCSS.7.EE.B.4A

A circle has a radius of 5 cm. What is its circumference?

• 25.1327 cm

• 31.4159 cm

• 20 cm

• 15.70795 cm

Tags

CCSS.7.G.B.4

In a class of 30 students, 18 are girls. What is the ratio of boys to girls in the class?

• 2:3

• 3:2

• 5:1

• 4:3

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

If a square has a side length of 10 cm, what is its perimeter?

• 40 cm

• 20 cm

• 30 cm

• 50 cm

Tags

CCSS.4.MD.A.3