Skip to content
Skills
Problems
Questions
Roles
Skills
Interview
Contest
Leaderboard
More
Problems
Questions
Roles
Skills
Interview
Contest
Leaderboard
More
Home
/
Blockchain Developer
/
Questions
/
Arithmetic
Blockchain Developer
Arithmetic questions
10 questions on Arithmetic for blockchain developers, easiest first.
Easy
1
Why old contracts used SafeMath
easy
Medium
7
Assuming 18 decimals
medium
Casting uint256 to uint96
medium
An unchecked subtraction
medium
Mixing oracle and token decimals
medium
Casting a negative price
medium
What unchecked does
medium
Computing a fee in basis points
medium
Hard
2
Rewards while nobody is staked
hard
Price that comes out as zero
hard