7th Grade Math

Front

What is the first step in solving the equation 5b - 6 = 24?

Back

Add 6 to both sides.

Front

What is the formula for the circumference of a circle?

Back

C = πd, where C is the circumference and d is the diameter.

Front

How do you find the circumference of a circle with a diameter of 14 inches?

Back

Use the formula C = πd. For d = 14, C ≈ 43.96 inches.

Front

What is the solution to the inequality 3x - 2 ≥ 34?

Back

x ≥ 12.

Front

How do you write an algebraic equation for the situation: Joan found 51 seashells and has 45 left after giving some to Alyssa?

Back

The equation is 51 - x = 45, where x is the number of seashells given to Alyssa.

Front

What does it mean to isolate a variable in an equation?

Back

To isolate a variable means to manipulate the equation so that the variable is on one side and all other terms are on the other side.

Front

What is the value of π (pi) to two decimal places?

Back

π is approximately 3.14.

Front

What is the relationship between diameter and radius in a circle?

Back

The diameter is twice the length of the radius (d = 2r).

Front

How do you solve the equation 2x + 3 = 11?

Back

Subtract 3 from both sides to get 2x = 8, then divide by 2 to find x = 4.

Front

What is the process of checking your solution in an equation?

Back

Substituting the solution back into the original equation to verify that both sides are equal.