Year 10 - Computing
Arithmetic operators
Programming: selection
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will explore the benefits of good programing practices and why subroutines are used in programs. They will create conditions in programs which use arithmetic, relational and logical expressions. They will develop their understanding of selection and explore nested selection.
Lesson Summary
You will learn to use a variety of arithmetic operators in a program.
Key Notes
- Arithmetic expressions are used to calculate values.
- Arithmetic expressions can be used in selection statements. Expressions either return as True or False.
- In real division there is no remainder because the entire value is divided.
- Integer division is when any remainder of a division is discarded.
- Modulo division (MOD) will return only the remainder of a division.
Vocabulary To Learn
- operator: a symbol or word that instructs the computer to perform a specific calculation or action
- arithetic expression: an expression that results in a numeric value
- integer division: sometimes known as floor division, is when any remainder of a division is discarded
- modulo division: an operation that gives you the remainder when one number is divided by another
Common Mistakes To Avoid
- Just like addition, subtraction and multiplication there is only one type of division in programming.
3 Quick Questions (With Answers)
1. Describe the system or process from this lesson in clear steps.
Arithmetic expressions are used to calculate values. Arithmetic expressions can be used in selection statements. Expressions either return as True or False.
2. Define this computing term and give one practical example. 'operator'
a symbol or word that instructs the computer to perform a specific calculation or action. Add one real device or system example to prove understanding.
3. Correct this common computing misconception.
Mistake: Just like addition, subtraction and multiplication there is only one type of division in programming. Correction: There are three types of division in programming; real, integer and modulo division. Each deal with remainder values differently and will be useful in different ways in programming.
More Lessons In This Unit
Browse all guides in the Year 10 Computing guide library.