# Algebra/Arithmetic/Multiplication Problems

< Algebra| Arithmetic

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There are three types of multiplication word problems:

- Repeated Addition
- Cartesian Multiplication
- Multiplicative Comparison Problems - This type of problem might look like a repeated addition or Cartesian multiplication problem, but you are missing part of the problem. If you know one number and a multiplier this is called a "Product Unknown Comparison Problem". If you know the product and the multiplier, but not the original set this is called a "Set Size Unknown problem", and finally if you are given the size of two sets, one of which is a multiple of the other than this is a "Multiplier Unknown" problem