Lesson 2: Arithmetic Expressions

Question 1

What do arithmetic expressions involve?

Answer 1

Mathematical symbols or keywords for operations

Keywords like Calculate and Compute are used

Question 2

What are the basic arithmetic operators?

Answer 2

• /

The division operator can be combined with modulus (mod) or integer division ()

Question 3

What is the purpose of parentheses in arithmetic expressions?

Answer 3

To control the order of evaluation

They can change the standard order of precedence

Question 4

List the standard order of precedence for arithmetic operations.

Answer 4

• Parentheses
• Exponentiation (^)
• Negation (Not) (-)
• Multiplication (*) and Division (/)
• Integer Division () and Modulus (mod)
• Addition (+) and Subtraction (-)

Operations with higher priority are evaluated first

Question 5

What are the two meanings of the equal sign (=)?

Answer 5

• Assign a value to a variable
• Replace the value of a variable

Example: total = 0 and Sum = sum + points

Question 6

Fill in the blank: The division operator can be combined with _______ or integer division.

Answer 6

mod

Question 7

True or False: The order of operations can be altered using parentheses.

Answer 7

True

Question 8

What is involved in setting up arithmetic equations?

Answer 8

Using variables, constants, and operators following the rules of precedence

Examples demonstrate using these elements in calculations

Question 9

What is the learning outcome related to understanding arithmetic expressions?

Answer 9

Understanding basic arithmetic operations and using operators