We are now starting algebra. Algebra is the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formula and equations that are missing.
Puzzle for you to solve:
A man walks into a store and steals a $100 bill. 5 Minutes later he returns to the store and buys items worth $70. He pays with the bill he had stolen, he gets $30 in change. How much did the store owner lose?
Expression: A mathematical phrase that can contain numbers and variables. a+1 or 23+30
Equality: Having the same amount or value. 60 seconds = 1 minute.
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