Calcache, math challenges

A fun puzzle to master the addition and multiplication tables,
Calcache is a game of "operations search" : like "word search", but with numbers instead of letters, and additions or multiplications instead of words.
Start with the table of 2 and try to find all the operations with the number 2 in the grid. Act quickly, you will receive a bonus for speed. Once the table is completed, the next table is unlocked.
With Calcache, your children will quickly become unbeatable and they will be the ones to ask you to revise their tables.