Addition, subtraction, multiplication and division operators
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which symbol multiplies two numbers in Cambridge pseudocode?
2. Which symbol divides one number by another in Cambridge pseudocode?
3. Which line correctly stores the total of Price and Tax in Total?
4. Score is 45 and MaxMark is 60. What does Answer ← Score * 100 / MaxMark store in Answer?
5. Which line correctly multiplies Length by Width and stores the result in Area?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1Total ← Price * Quantity | AMultiplies Price by Quantity and stores the result in Total | |
| 2Average ← Sum / Count | BDivides Sum by Count and stores the result in Average | |
| 3Work out a percentage by multiplying the score by 100, then dividing by the maximum mark, and storing it in a variable | CThe letter x is not a multiplication operator in pseudocode. Use * instead: Area ← Length * Width | |
| 4Add two numbers together and store the result in a variable | DThe result must be stored on the left of the ← operator, with the expression on the right: NewScore ← Score + 5 | |
| 5Area ← Length x Width | ETotal ← Mark1 + Mark2 | |
| 6Score + 5 ← NewScore | FAnswer ← Score * 100 / MaxMark |
C
Definitions
+ - * /
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
Answer ← Score _ 100 / MaxMark
2.
Answer ← Score * 100 _ MaxMark
3.
Total ← Price _ Tax
4.
Change ← Paid _ Cost
5.
Answer _ Score * 100 / MaxMark
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
Price ← 5
B
Total ← Price x 3
C
OUTPUT Total
Question 2
A
Score ← 45
B
MaxMark = 60
C
Answer ← Score * 100 / MaxMark
D
OUTPUT Answer
Question 3
A
Cost ← 12 & 8
B
Change ← 20 - Cost
C
OUTPUT Change
Question 4
A
Width ← 6
B
Height ← 4
C
Area ← Width + Height
D
OUTPUT Area
Question 5
A
Total ← 90
B
Count ← 3
C
Mean ← Total / Count
D
Double ← 2 Mean
E
OUTPUT Double
Answer Key
Addition, subtraction, multiplication and division operators
Section A: Quick Questions
Q1
B — *
Q2
A — /
Q3
A — Total ← Price + Tax
Q4
A — 75
Q5
B — Area ← Length * Width
Section B: Match the Pairs
Q1
Total ← Price * Quantity → Multiplies Price by Quantity and stores the result in Total
Q2
Average ← Sum / Count → Divides Sum by Count and stores the result in Average
Q3
Work out a percentage by multiplying the score by 100, then dividing by the maximum mark, and storing it in a variable → Answer ← Score * 100 / MaxMark
Q4
Add two numbers together and store the result in a variable → Total ← Mark1 + Mark2
Q5
Area ← Length x Width → The letter x is not a multiplication operator in pseudocode. Use * instead: Area ← Length * Width
Q6
Score + 5 ← NewScore → The result must be stored on the left of the ← operator, with the expression on the right: NewScore ← Score + 5
Section C: Definitions
Q1
+ - * / — The arithmetic operators in pseudocode: + adds, - subtracts, * multiplies and / divides. Example: Answer ← Score * 100 / MaxMark stores the result in a variable.Section D: Fill in the Blanks
Q1
Answer ← Score * 100 / MaxMarkQ2
Answer ← Score * 100 / MaxMarkQ3
Total ← Price + TaxQ4
Change ← Paid - CostQ5
Answer ← Score * 100 / MaxMarkSection E: Spot the Error
Q1
B — The letter x is not a multiplication operator in pseudocode. Multiplication uses *, so the line should be Total ← Price * 3.
Q2
B — A value is stored in a variable with the assignment arrow ←, not =. The line should be MaxMark ← 60.
Q3
A — The & symbol does not add numbers. Addition uses +, so the line should be Cost ← 12 + 8.
Q4
C — Area is width multiplied by height, so the operator must be *, not +. The line should be Area ← Width * Height.
Q5
D — There is no operator between 2 and Mean. Multiplication must be written with *, so the line should be Double ← Mean * 2.