All the formulas of primary school mathematics

All the formulas of primary school mathematics


1. The number of each copy × the number of copies = the total number of copies △ the number of each copy = the total number of copies △ the number of copies = the number of copies 2. 1 times × the number of copies = the number of multiples △ 1 times = the number of multiples △ the number of multiples = the number of multiples △ the number of multiples △ the number of multiples = the number of multiples △ the number of multiples = the number of multiples △ the number of multiples = the number of multiples △ the number of multiples = the