7th Grade Math Review

Front

What is the position of -6.5 on a number line compared to other numbers?

Back

-6.5 is to the left of 0 and is the furthest left compared to other numbers like -5, -4, etc.

Front

What is an equation? Provide an example.

Back

An equation is a mathematical statement that asserts the equality of two expressions. Example: 6x + 10 = 4.

Front

What is the product of two negative numbers?

Back

The product of two negative numbers is positive. For example, -5 x -3 = 15.

Front

How do you find the diameter of a circle?

Back

The diameter of a circle is twice the radius. If the radius is 12 cm, the diameter is 24 cm.

Front

How do you solve for x in the equation -3 + 4x = 25?

Back

Add 3 to both sides to get 4x = 28, then divide by 4 to find x = 7.

Front

What is the definition of a number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length, used to represent real numbers.

Front

What does it mean for a number to be 'furthest to the left' on a number line?

Back

It means that the number is smaller than all other numbers being compared.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers and variables without an equality sign, while an equation includes an equality sign.

Front

What is the formula for calculating the area of a circle?

Back

The area of a circle is calculated using the formula A = πr², where r is the radius.

Front

What is the significance of the coefficient in an algebraic expression?

Back

The coefficient is the numerical factor that multiplies a variable in an expression, indicating how many times the variable is counted.