True or false values
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which value is a true/false (Boolean) value?
2. Which question can be answered with a Boolean?
3. How many different values can a Boolean have?
4. A light switch is on. Which Boolean value shows this for 'Is the light on?'
5. A Boolean is most like which pair of binary ideas?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1lightOn = true | AStores the answer yes to the question 'is the light on?' | |
| 2isRaining = false | BA Boolean can only be true or false. 'maybe' is a third value, so it is not allowed. Use true or false. | |
| 3A Boolean can only ever be one of two values, like on and off in binary | CStores the answer no to the question 'is it raining?' | |
| 4A Boolean stores the answer to a yes/no question | DdoorOpen = true | |
| 5lightOn = maybe | EThe quote marks make it text, not a Boolean. Write true without quotes. | |
| 6isSunny = "true" | Ftrue or false |
C
Definitions
Boolean
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
light = ____
2.
raining = _____
3.
bigger = 5 _ 3
4.
light = True
print(_____)
5.
same = 7 __ 7
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
light_on = True
B
door_open = Falce
C
print(light_on)
Question 2
A
is_raining = False
B
print(is_raining)
C
has_pet = Yes
Question 3
A
switch_on = True
B
if switch_on
C
print("Light is on")
Question 4
A
is_open = True
B
is_full = False
C
print(is_open)
D
print(is full)
Question 5
A
is_day = True
B
is_night = not is_day
C
print(is_day)
D
print(is_nigth)
Answer Key
True or false values
Section A: Quick Questions
Q1
B — true
Q2
A — Is the light on?
Q3
B — Two: true and false
Q4
A — true
Q5
A — On and off
Section B: Match the Pairs
Q1
lightOn = true → Stores the answer yes to the question 'is the light on?'
Q2
isRaining = false → Stores the answer no to the question 'is it raining?'
Q3
A Boolean can only ever be one of two values, like on and off in binary → true or false
Q4
A Boolean stores the answer to a yes/no question → doorOpen = true
Q5
lightOn = maybe → A Boolean can only be true or false. 'maybe' is a third value, so it is not allowed. Use true or false.
Q6
isSunny = "true" → The quote marks make it text, not a Boolean. Write true without quotes.
Section C: Definitions
Q1
Boolean — A data type with only two possible values: true or false. It stores the answer to a yes/no question, like 'is the light on?', just like on and off in binary.Section D: Fill in the Blanks
Q1
light = TrueQ2
raining = FalseQ3
bigger = 5 > 3Q4
light = True
print(light)Q5
same = 7 == 7Section E: Spot the Error
Q1
B — A Boolean can only be True or False, and Falce is a typo. Line 2 should be door_open = False.
Q2
C — A Boolean can only be True or False. Yes is not a Boolean value, so line 3 should be has_pet = True.
Q3
B — An if line needs a colon at the end. Line 2 should be if switch_on:
Q4
D — A variable name cannot have a space in it. The name is is_full with an underscore, so line 4 should be print(is_full).
Q5
D — The variable name is misspelled. The Boolean was made as is_night, so line 4 should be print(is_night).