Web3 Chapter 3: Solidity Math Operations

Math in Solidity is pretty straightforward. The following operations are the same as in most programming languages:

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• Addition: x + y
• Subtraction: x - y
• Multiplication: x * y
• Division: x / y
• Modulus / remainder: x % y (for example, 13 % 5 is 3, because if you divide 5 into 13, 3 is the remainder)

Solidity also supports an exponential operator (i.e. “x to the power of y”, x^y):

uint x = 5 ** 2; // equal to 5^2 = 25