Python lesson

Maths

* means times and / means divide. total holds 140, so total / 2 shows 70.0: dividing always gives a decimal.

About 5–10 minutes · no sign-up needed

Example

Use + - * and / on numbers, or on variables that hold numbers:

price = 35
qty = 4
total = price * qty
print(total)
print(total / 2)

Output:

140
70.0

+ - * /Add, subtract, multiply, divide.

total = price * qtyWork out the answer, then store it in a new variable.

(a + b) * 2Brackets are worked out first, just like in maths.

Put together: profit = revenue - costs stores the answer, and print(profit) shows it.

Try each one in your head first, then open the answer.

1. Build a line that stores price times qty in a variable called total.

total = price * qty

2. Build a line that shows revenue minus costs.

print(revenue - costs)

3. Revenue was 120 and costs were 45. Work out the profit in a variable called profit, then print it.

revenue = 120
costs = 45
profit = revenue - costs
print(profit)

4. Two orders were worth 70 and 35. Print their total.

print(70 + 35)

5. price is 35 and qty is 3. Print the total with VAT added: (price * qty) * 1.075.

price = 35
qty = 3
print((price * qty) * 1.075)

Learn it by doing. This lesson is a short hands-on level on Bampaa: see it work, then build and write it yourself, with instant feedback.

About 5–10 minutes · no sign-up needed