EOU Assessment: 1.2 Using Operators

Part 1: Fill in the Blanks

Instructions: Use the words from the Word Bank to complete the sentences below.

1. A named container in computer memory that holds a value that can change is called a .

2. Data provided by a person typing on a keyboard while a program is running is called .

3. Symbols like the plus (+) and minus (-) signs used to do math calculations in code are called .

4. A question or rule checked by an algorithm that results in either True or False is a .

5. Algorithms carry out instructions one after another in a specific .

Part 2: Multiple Choice Questions

Instructions: Select the correct option for each question.

1. Which symbol is used in Scratch and pseudocode as an arithmetic operator for subtraction?

A) *

B) -

C) =

D) /

2. Look at this algorithm:

set FirstNumber to 7
set SecondNumber to 6
set Result to FirstNumber + SecondNumber

What value is assigned to Result?

A) 7

B) 6

C) 13

D) 76

3. In Scratch, which block from the Sensing category pauses the program to collect user input?

A) say block

B) ask [...] and wait block

C) set [...] to [...] block

D) when green flag clicked block

4. What does a comparison operator return when it evaluates a condition?

A) A new variable name

B) A list of numbers

C) Either True or False

D) An error message

5. What happens to the old value stored inside a variable when a new value is assigned to it?

A) It stays saved alongside the new value.

B) It is overwritten and replaced by the new value.

C) It turns into text.

D) It gets printed on the screen automatically.

6. Consider the condition check: set Height to 160 followed by Height equal to 150. What will this condition return?

A) True

B) False

C) 160

D) 150

7. The word "algorithm" originates from the name of which 9th-century Persian mathematician?

A) Muhammad ibn Mūsā al-Khwarizmī

B) Ada Lovelace

C) Alan Turing

D) Charles Babbage

Part 3: One-Word Answers

Instructions: Write the correct one-word answer for each item.

1. What hand-held computer device performs arithmetic calculations when you press its buttons?

2. What binary outcome (True or False) is returned when evaluating 10 equal to 20?

3. In Scratch, what default built-in variable automatically holds the text or number entered into an ask block?

4. What type of operator checks if two values are exactly the same?

Part 4: Match the Following

Instructions: Drag the matching concepts from Column B into the correct slot on the left.

Calculating total vegetables: set CarrotAmount to 5 + 2

Drop matching concept here

A user typing their age on a keyboard

Drop matching concept here

Checking if a child is exactly 150 cm tall to ride a roller coaster

Drop matching concept here

Setting Basketballs to 1, then 2, and finally 3

Drop matching concept here

Matching Concepts

A. Password verification rule checking UserPassword equal to CorrectPassword

B. Using an arithmetic operator (+) with numbers to update a variable

C. Overwriting variable storage in sequential order

D. Dynamic User Input

Part 5: Arrange in Proper Sequence

Sequence A: User Input Calculator Flow

Instructions: Place the steps into correct order (1 to 5).

Program calculates: set Result to Number1 + Number2

User types the second number into the keyboard (ask block)

User types the first number into the keyboard (ask block)

Program outputs / displays Result

Program assigns input to variable Number1

Sequence B: Variable Overwrite Execution

Instructions: Place the execution steps into correct order (1 to 4).

Variable Birds stores value 24

Program executes: set Ducks to 2

Program executes: set Birds to Ducks + Chickens (20 + 4)

Program updates: set Birds to Birds + Ducks (24 + 2 = 26)

Part 6: True or False

Instructions: Select True or False. If False, write the correct statement in full.

1. Variables can store multiple numbers at the exact same time.

True False

2. The subtraction symbol (-) is an arithmetic operator.

True False

3. A comparison operator checks values and returns a number like 10 or 20.

True False

4. Assigning user input stored in answer to a custom named variable (e.g., set FirstNumber to answer) is good practice because answer changes when new input is entered.

True False

5. According to cybersecurity recommendations, a strong password like 123ABC is better than a 16-character pass-phrase made of three random words.

True False

6. Dynamic computation happens when a computer actively manipulates numbers using operators rather than just storing fixed values.

True False

Part 7: Short Recall

Instructions: Provide short answers for the lists below.

1. List any two primary arithmetic operators used in basic calculations and state what symbol represents each.

2. List any three key terms associated with running an interactive calculator program.

Student Details

Part 1: Fill in the Blanks

Part 2: Multiple Choice Questions

Part 3: One-Word Answers

Part 4: Match the Following

Matching Concepts

Part 5: Arrange in Proper Sequence

Part 6: True or False

Part 7: Short Recall