Math 7 Substitution Practice

Front

What is substitution in algebra?

Back

Substitution in algebra is the process of replacing a variable with a number or another expression to evaluate an algebraic expression.

Front

How do you evaluate an expression with given values for variables?

Back

To evaluate an expression, substitute the given values for the variables into the expression and perform the arithmetic operations.

Front

What is the value of 3m + 5n when m = 2 and n = 8?

Back

46

Front

How do you calculate the value of an expression like 3x² + y?

Back

Substitute the values of x and y into the expression and calculate using the order of operations.

Front

What is the value of 3x² + y when x = 5 and y = 2?

Back

77

Front

What is the formula for evaluating 5m - 3n?

Back

Substitute the values of m and n into the expression and perform the subtraction and multiplication.

Front

What is the value of 5m - 3n when m = 6 and n = 1?

Back

27

Front

How do you evaluate an expression like 2a + 4b?

Back

Substitute the values of a and b into the expression and perform the arithmetic operations.

Front

What is the value of 2a + 4b when a = -3 and b = 7?

Back

22

Front

What is the expression for evaluating 4x + 2y?

Back

Substitute the values of x and y into the expression and calculate the result.