Operations on numbers: + - * /
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which symbol do we use to multiply two numbers in code?
2. Which symbol do we use to divide two numbers in code?
3. What is the answer to 6 + 4?
4. What is the answer to 3 * 5?
5. What is the answer to 20 / 4?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 16 * 7 | AThe letter x is not a maths operator in code. Use the * symbol to multiply, like 3 * 4. | |
| 220 / 4 | BThe รท symbol is not on the keyboard and does not work in code. Use / to divide, like 12 / 3. | |
| 3Adding two numbers with + gives a new number as the answer | C10 - 3 | |
| 4Subtracting one number from another with - gives a number as the answer | DDivides 20 by 4 and gives the number 5 | |
| 53 x 4 | E8 + 5 | |
| 612 รท 3 | FMultiplies 6 by 7 and gives the number 42 |
C
Definitions
+ - * /
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
print(6 _ 4)
2.
print(7 _ 3)
3.
print(20 _ 4)
4.
left = 8 _ 3
print(left)
5.
cost = 5
qty = 2
total = ____ * qty
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
boxes = 4
B
total = boxes x 6
C
print(total)
Question 2
A
pens = 12
B
left = pens + 5
C
print(left)
Question 3
A
pizza = 12
B
friends = 4
C
each = pizza * friends
D
print(each)
Question 4
A
a = 9
B
b = 3
C
answer = a b
D
print(answer)
Question 5
A
8 + 7 = total
B
print(total)
C
print(total * 2)
Answer Key
Operations on numbers: + - * /
Section A: Quick Questions
Q1
A — *
Q2
B — /
Q3
A — 10
Q4
B — 15
Q5
A — 5
Section B: Match the Pairs
Q1
6 * 7 → Multiplies 6 by 7 and gives the number 42
Q2
20 / 4 → Divides 20 by 4 and gives the number 5
Q3
Adding two numbers with + gives a new number as the answer → 8 + 5
Q4
Subtracting one number from another with - gives a number as the answer → 10 - 3
Q5
3 x 4 → The letter x is not a maths operator in code. Use the * symbol to multiply, like 3 * 4.
Q6
12 รท 3 → The รท symbol is not on the keyboard and does not work in code. Use / to divide, like 12 / 3.
Section C: Definitions
Q1
+ - * / — The four maths operators for numbers: + adds, - subtracts, * multiplies and / divides. Each one works on two numbers and gives back a new number as the answer.Section D: Fill in the Blanks
Q1
print(6 + 4)Q2
print(7 * 3)Q3
print(20 / 4)Q4
left = 8 - 3
print(left)Q5
cost = 5
qty = 2
total = cost * qtySection E: Spot the Error
Q1
B — The letter x is not a maths operator in code. To multiply two numbers you use *, so the line should be total = boxes * 6.
Q2
B — The number left after giving 5 away is found by subtracting. Adding would make more pens. It should be left = pens - 5.
Q3
C — Sharing a number equally between friends needs division, not multiplication. It should be each = pizza / friends, which gives 3.
Q4
C — There is no operator between a and b, so the computer cannot tell what to do. Add * to multiply: answer = a * b.
Q5
A — The variable name goes on the left and the calculation goes on the right. It should be total = 8 + 7 so the answer, 15, is stored in total.