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True or False?

The relational operators used to compare values in a condition, how a condition evaluates to true or false, and the boundary difference between less than and less than or equal to.

⏱️ 16 min 🎯 14 activities
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What you'll cover

Is it true or false?

Programs make decisions by testing conditions, and every condition is either true or false. To write a condition you compare two values with a relational operator, such as less than or greater than. This module works through those operators and the boundary that trips people up: the difference between less than and less than or equal to.

Comparison vocabulary

Learn these four terms before you test conditions.

The boundary case

The equal case is exactly where < and <= differ.

Check the boundary

A top answer evaluates a condition exactly and never guesses at the edge. The plain signs < and > leave out the equal case, while <= and >= include it, so 5 < 5 is false but 5 <= 5 is true. Compare the two values, apply the operator, and the answer is always true or false.

Match the operator

  • <
  • >
  • <=
  • >=
  • less than
  • greater than
  • less than or equal to
  • greater than or equal to

Match the meaning

  • the equals sign in a test
  • the not-equal test
  • a relational operator
  • a condition
  • true when the two values are the same
  • true when the two values are different
  • a symbol that compares two values
  • a test that gives true or false

Is 5 less than 5?

What is the value of the condition 5 < 5?

  • False.
  • True.
  • It depends on the program.
  • Neither true nor false.

Which are true?

Select the TWO conditions that are true.

  • 3 < 5
  • 5 <= 5
  • 5 > 5
  • 2 > 4

Order the evaluation

Put the steps of working out a condition in order, earliest first.

  • Read the two values
  • Read the operator between them
  • Compare the values with the operator
  • Decide whether it is true or false
  • Use the result to make the decision

Complete the facts

A symbol that compares two values is a relational _____. A test that gives true or false is a _____. The condition 5 < 5 is _____, because < leaves out the equal case. The condition 5 <= 5 is _____, because <= includes it. A condition can only ever be true or _____.

operator condition false true false too number loop maybe equal zero

Count the true ones

Look at the numbers 3, 5, 7 and 9. Count how many of them are greater than 5. What is the answer?

Spot the true conditions

Tap the TWO conditions that are true.

  • 4 < 8
  • 6 >= 6
  • 3 > 7
  • 9 < 2

Evaluate the condition

Read each condition and choose its value.

  • A program checks the condition 7 <= 7. What is its value?
  • A program checks the condition 4 > 4. What is its value?
  • A score of 5 must pass the test score >= 5 to win. Does a score of 5 pass?

Explain the operators

Explain the relational operators and how a condition is worked out to true or false.

  • Describe what a relational operator and a condition are
  • Give an example of a condition that is true and one that is false
  • Explain the boundary difference between less than and less than or equal to