Substitution

Front

What is substitution in mathematics?

Back

Substitution is the process of replacing a variable in an expression or equation with a specific value.

Front

If y=7, what is the value of 2(y+4)?

Back

22

Front

If a = 4 and b = 6, what is 3a + 5b?

Back

42

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their respective values.

Front

If h=7, what is the value of h^2?

Back

49

Front

If y=4, what is the value of 3y+5?

Back

17

Front

If j=4, what is the value of 2j+3?

Back

11

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

If x=3, what is the value of 5x - 2?

Back

13

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression is a combination of numbers, variables, and operations without an equality sign.