Numeric data: integer
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which value is an integer?
2. Which data is best stored as an integer?
3. True or false: -3 is an integer.
4. Which value is NOT an integer?
5. A school records how many laptops it owns. Which data type suits this?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 125 | AA negative whole number, which is still an integer | |
| 2-3 | BScoreChange (Integer) = -4 | |
| 3A count of students in a class is stored in an integer field | CWrong belief that integers must be positive. Integers can be negative, so -3 is valid. | |
| 4Integers can be negative, such as a change in score | DNumStudents (Integer) = 28 | |
| 5NumStudents (Integer) = 24.5 | EA positive whole number with no decimal part, so it is an integer | |
| 6Balance (Integer) = -3 // Error: negatives not allowed | FAn integer cannot have a decimal part. A count of students must be a whole number such as 24. |
C
Definitions
integer
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
print(isinstance(25, ___))
2.
whole = ___(7.9)
print(whole)
3.
print(____(25))
4.
____________ = 25
print(num_students + 1)
5.
change = _3
print(type(change))
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
DECLARE students AS INTEGER
B
DECLARE absent AS INTEGER
C
students ← 28.5
D
absent ← 3
Question 2
A
DECLARE goals AS FLOAT
B
goals ← 3
C
goals ← goals + 1
D
DISPLAY goals
Question 3
A
DECLARE total AS INTEGER
B
total ← 1,200
C
DISPLAY total
Question 4
A
DECLARE tickets AS INTEGER
B
tickets ← 0
C
tickets ← tickets + 12
D
DISPLAY "tickets"
Question 5
A
Table: Class
B
Field: ClassName, Text
C
Field: StudentCount, Text
D
Field: RoomNumber, Integer
Answer Key
Numeric data: integer
Section A: Quick Questions
Q1
A — 25
Q2
A — The number of students in a class
Q3
B — True
Q4
B — 3.0 (written with a decimal part)
Q5
A — Integer
Section B: Match the Pairs
Q1
25 → A positive whole number with no decimal part, so it is an integer
Q2
-3 → A negative whole number, which is still an integer
Q3
A count of students in a class is stored in an integer field → NumStudents (Integer) = 28
Q4
Integers can be negative, such as a change in score → ScoreChange (Integer) = -4
Q5
NumStudents (Integer) = 24.5 → An integer cannot have a decimal part. A count of students must be a whole number such as 24.
Q6
Balance (Integer) = -3 // Error: negatives not allowed → Wrong belief that integers must be positive. Integers can be negative, so -3 is valid.
Section C: Definitions
Q1
integer — A whole number with no decimal part, positive or negative, used for counts such as the number of students in a class (e.g. 25, 0 or -3).Section D: Fill in the Blanks
Q1
print(isinstance(25, int))Q2
whole = int(7.9)
print(whole)Q3
print(type(25))Q4
num_students = 25
print(num_students + 1)Q5
change = -3
print(type(change))Section E: Spot the Error
Q1
C — An integer has no decimal part, and you cannot have half a student. The line should be students ← 28.
Q2
A — Goals are counted in whole numbers, so the variable should be declared AS INTEGER. FLOAT is for numbers with decimal places.
Q3
B — Integer values are typed without commas or other separators. It should be total ← 1200.
Q4
D — The quotes make this the text "tickets" instead of the integer stored in the variable. It should be DISPLAY tickets.
Q5
C — The number of students is a count, so the field should use the Integer data type, not Text. It should be Field: StudentCount, Integer.