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 expression or solve an equation.

Tags

CCSS.6.EE.A.2C

Front

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

Back

22

Tags

CCSS.6.EE.A.2C

Front

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

Back

42

Tags

CCSS.6.EE.A.2C

Front

If a=6 and b=7, what is the value of 15-a-b?

Back

2

Tags

CCSS.6.EE.A.2C

Front

What is the value of the expression 2x^2 + z^2 when x = 3, y = 2, and z = 4?

Back

34

Tags

CCSS.6.EE.A.2C

Front

If x=5, what is the value of 7x-1?

Back

34

Tags

CCSS.6.EE.A.2C

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 numbers.

Tags

CCSS.6.EE.A.2C

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).

Tags

CCSS.7.NS.A.3

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents an unknown value in an expression or equation.

Tags

CCSS.6.EE.A.2B

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Tags

CCSS.6.EE.A.2B