Whole numbers as a data type

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which one is a whole number?

A 7

B 7.5

2. Is 0 a whole number?

A No, it is not a number

B Yes, 0 is a whole number

3. A class has 24 students. Which data fits best?

A 24 (a whole number)

B 24.5 (a decimal)

4. Which of these is NOT a whole number?

A 3.5

B 250

5. Your game character has some lives left. Which value makes sense?

A 2.75 lives

B 3 lives

Match the Pairs

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

Left column		Right column
1score = 250		Astudents = 28
2lives = 0		BStores a whole number, 250, in a variable called score
3A whole number counts things like students in a class		Cheight = 1.5
4A number with a decimal part is not a whole number		D3.5 has a decimal part, so it is not a whole number. Use 3 for lives.
5lives = 3.5 # whole number		EZero is a whole number, so this means the player has no lives left
6Zero is not a whole number		FWrong. Zero has no fraction or decimal part, so 0 is a whole number.

Definitions

whole number

Fill in the Blanks

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

students = 28 print(________)

lives = _ # no lives left

score = 10 score = score _ 1 print(score)

lives = 3 lives = lives _ 1 print(lives)

score = 250 _____(score) # 250 is a whole number

Spot the Error

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

Question 1

A # lives are whole numbers

B lives = 3

C lives = lives - 0.5

D print(lives)

Question 2

A # count the students

B boys = 11

C girls = 13

D total = boys + girls + 0.5

E print(total)

Question 3

A score = 0

B points = '250'

C print(score + points)

Question 4

A # no goals scored yet

B goals = 'zero'

C print(goals)

Question 5

A cats = 3.5

B dogs = 2

C print(cats + dogs)

Answer Key

Whole numbers as a data type

Section A: Quick Questions

A — 7

B — Yes, 0 is a whole number

A — 24 (a whole number)

A — 3.5

B — 3 lives

Section B: Match the Pairs

score = 250 → Stores a whole number, 250, in a variable called score

lives = 0 → Zero is a whole number, so this means the player has no lives left

A whole number counts things like students in a class → students = 28

A number with a decimal part is not a whole number → height = 1.5

lives = 3.5 # whole number → 3.5 has a decimal part, so it is not a whole number. Use 3 for lives.

Zero is not a whole number → Wrong. Zero has no fraction or decimal part, so 0 is a whole number.

Section C: Definitions

whole number — A number with no fraction or decimal part, like 0, 7 or 250. We use whole numbers to count things, such as scores, lives or students. 3.5 is not a whole number.

Section D: Fill in the Blanks

students = 28
print(students)

lives = 0 # no lives left

score = 10
score = score + 1
print(score)

lives = 3
lives = lives - 1
print(lives)

score = 250
print(score)
# 250 is a whole number

Section E: Spot the Error

C — Taking away 0.5 leaves a decimal. Lives are counted, so they stay whole numbers. It should be lives = lives - 1.

D — You cannot have half a student. Counting students uses whole numbers, so the extra + 0.5 should be removed.

B — Quote marks turn 250 into text. A whole number is typed with no quotes, so it should be points = 250.

B — Zero is a whole number, so we type the digit 0. The word 'zero' in quotes is text. It should be goals = 0.

A — We count cats as whole numbers. 3.5 has a decimal part, so it is not a whole number. It should be cats = 3.