Relational operators = < <= > >= <>

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which symbol means 'not equal to' in Cambridge pseudocode?

A !=

B <>

2. Which line compares Age with 18 and gives TRUE or FALSE?

A Age = 18

B Age ← 18

3. Age is 16. What is the result of Age >= 16?

A TRUE

B FALSE

4. Score is 50. What is the result of Score < 50?

A FALSE

B TRUE

5. Which line stores the value 7 in the variable Count?

A Count = 7

B Count ← 7

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1Age <> 18		AIF Password = "abc123" THEN
2Score >= 50		B← assigns a value and cannot compare. Use = in the condition: IF Age = 18 THEN.
3Use = to compare two values and get TRUE or FALSE, not to store a value		CTRUE when Score is 50 or more, FALSE when Score is below 50
4Use ← to assign a value to a variable, while = only compares values		DTRUE when Age is not equal to 18, FALSE when Age is exactly 18
5IF Mark != 40 THEN		E!= is not Cambridge pseudocode. Not equal is written <>, so it should be IF Mark <> 40 THEN.
6IF Age ← 18 THEN		FTotal ← 0

Definitions

= < <= > >= <>

Fill in the Blanks

Complete each line of code by filling in the missing parts.

IF Age __ 18 THEN OUTPUT "Adult" ENDIF

IF Password __ "abc123" THEN OUTPUT "Wrong password" ENDIF

IF Choice _ 1 THEN OUTPUT "You chose option 1" ENDIF

IsTeen ← Age __ 19 OUTPUT IsTeen

Total _ 0 IF Total = 0 THEN OUTPUT "Empty" ENDIF

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A INPUT Age

B Adult ← FALSE

C // 18 or over is an adult

D IF Age => 18 THEN

E Adult ← TRUE

F ENDIF

Question 2

A IF Name != "Admin" THEN

B OUTPUT "Access limited"

C ENDIF

Question 3

A WHILE Guess = Secret DO

B INPUT Guess

C ENDWHILE

Question 4

A INPUT Mark

B // 40 or more is a pass

C IF Mark > 40 THEN

D OUTPUT "Pass"

E ENDIF

Question 5

A INPUT Code

B IF Code ← 1234 THEN

C OUTPUT "Welcome"

D ENDIF

Answer Key

Relational operators = < <= > >= <>

Section A: Quick Questions

B — <>

A — Age = 18

A — TRUE

A — FALSE

B — Count ← 7

Section B: Match the Pairs

Age <> 18 → TRUE when Age is not equal to 18, FALSE when Age is exactly 18

Score >= 50 → TRUE when Score is 50 or more, FALSE when Score is below 50

Use = to compare two values and get TRUE or FALSE, not to store a value → IF Password = "abc123" THEN

Use ← to assign a value to a variable, while = only compares values → Total ← 0

IF Mark != 40 THEN → != is not Cambridge pseudocode. Not equal is written <>, so it should be IF Mark <> 40 THEN.

IF Age ← 18 THEN → ← assigns a value and cannot compare. Use = in the condition: IF Age = 18 THEN.

Section C: Definitions

= < <= > >= <> — Relational operators compare two values and give TRUE or FALSE: = equal, < less, <= at most, > greater, >= at least, <> not equal. Use = to compare, ← to assign.

Section D: Fill in the Blanks

IF Age >= 18 THEN
  OUTPUT "Adult"
ENDIF

IF Password <> "abc123" THEN
  OUTPUT "Wrong password"
ENDIF

IF Choice = 1 THEN
  OUTPUT "You chose option 1"
ENDIF

IsTeen ← Age <= 19
OUTPUT IsTeen

Total ← 0
IF Total = 0 THEN
  OUTPUT "Empty"
ENDIF

Section E: Spot the Error

D — => is not a relational operator in Cambridge pseudocode. 'Greater than or equal to' is written >=, so the line should be IF Age >= 18 THEN.

A — Cambridge pseudocode writes 'not equal to' as <>, not !=. The line should be IF Name <> "Admin" THEN.

A — The loop must keep asking while the guess is NOT the secret. Using = would stop the loop at once for a wrong guess. It should be WHILE Guess <> Secret DO.

C — A mark of exactly 40 should pass, but > leaves 40 out. 'At least 40' needs >=, so the line should be IF Mark >= 40 THEN.

B — ← assigns a value, but an IF needs a comparison that gives TRUE or FALSE. Use = to compare: IF Code = 1234 THEN.