Oh my God, it's so powerful, it deserves to be an excellent primary school Olympiad teacher, and I have compiled a quick calculation formula for everyone. With this formula, not only the calculation rate has been greatly improved, but the accuracy has also been higher

Oh my God, it's so powerful, it deserves to be an excellent primary school Olympiad teacher, and I have compiled a quick calculation formula for everyone. With this formula, not only the calculation rate has been greatly improved, but the accuracy has also been higher. If you have children at home, it is recommended to collect and save them, and when you have nothing to do, you can accompany your children to learn and practice!