Math Mastery for Grade 7

Simplify the expression: 3x + 5x - 2.

• 8x - 2

• 8x + 2

• 5x - 2

• 3x + 2

What is the value of x in the equation: 2x + 3 = 11?

• 5

• 2

• 4

• 7

If the ratio of boys to girls in a class is 3:4, how many boys are there if there are 28 girls?

• 21

• 30

• 24

• 18

Solve for y: 5y - 7 = 3y + 5.

• 10

• 4

• 8

• 6

Express 15% as a fraction.

• 2/15

• 1/10

• 3/20

• 4/25

If 4 apples cost $2, how much do 10 apples cost using the unitary method?

• $5.00

• $6.00

• $3.00

• $4.00

Simplify: 7a - 3a + 2.

• 5a + 2

• 4a + 2

• 3a + 2

• 7a - 2

What is the solution to the equation: 3(x - 2) = 12?

• 4

• 6

• 10

• 8

If the ratio of red marbles to blue marbles is 2:5, what fraction of the marbles are red?

• 1/3

• 2/7

• 4/9

• 3/7

Calculate 25% of 200.

• 50

• 100

• 75

• 25