Substitution

Front

What is substitution in mathematics?

Back

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

Front

Solve 14 - cd when c = 2 and d = 7.

Back

0

Front

What is the value of 8a + (a - b) when a = 7 and b = 4?

Back

59

Front

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

Back

42

Front

What is the first step in solving 12 ÷ 3 x 4?

Back

12 ÷ 3

Front

If a = 6 and b = 7, find the value of 15 - a - b.

Back

2

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with numbers.

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Solve for x: 5x = 20. What is x?

Back

4

Front

What is the value of 2a + 3b when a = 3 and b = 5?

Back

21