When multiplying a 2-digit number by a 1-digit number you can use both mental and written methods. Let's take a look at an example of solving a multiplication problem in your head. Before you ...

Another boldly wrote '9' is correct. One user provided a more detailed explanation. 'First digit on the right side = same as the digit on the left hand side. Second digit on the right side = sum ...

For example, when introducing multi-digit multiplication, David Shilkitus might begin with an area model to show the distributive property in action. Once students grasp the conceptual basis, they are ...