How do you do difficult multiplication?

Long multiplication is a method of multiplying two numbers which are difficult to multiply easily. For example, we can easily find the product of 55 × 20 by multiplying 55 by 2 and then adding a 0 at the rightmost place of the answer. 55 × 2 = 110 and 55 × 20 = 1100.

What are some multiplication strategies?

The nine multiplication strategies include:

  • repeated addition.
  • array.
  • equal groups.
  • number line.
  • commutative law.
  • doubling and halving.
  • doubling.
  • use friendly facts.

How do I teach my 3rd grade multiplication?

Fun Ways to Teach Multiplication to 3rd Graders

  1. What Is Multiplication?
  2. Move from Concrete to Abstract When first introducing multiplication, provide plenty of manipulatives for children to work with.
  3. Use Arrays One helpful way to represent problems is by using arrays.

What order do you teach multiplication strategies?

Here’s a five-step method for teaching multiplication that will give your students confidence, and you some easy lesson plans.

  1. Step one: start with physical manipulatives.
  2. Step two: introduce skip counting.
  3. Step three: highlight the commutative property.
  4. Step four: drill and practice multiplication facts.

Which is the best strategy to teach multi-digit multiplication?

Partial Products. This is one of the most important strategies to teach as an alternative to long multiplication. In partial products, the equation is set up like in traditional long multiplication, but the way we multiply is different. For example, for the equation 35×3, we first multiply 3×5 to make 15.

What is the strategy for multiplying by 10?

The strategy: When we multiply by 10, we increase the place values by 1 place. When we multiply by 100, we increase the place values by 2 places. When we multiply by 1000, we increase the place values by 3 places.

How are partial products used to teach multiplication?

Most teachers are likely aware of the Partial Products method. In case you are not, it’s really just taking the larger number and breaking it out into expanded form and then having the other factor multiply each of the expanded form factors.

Is the area model the same as multi digit multiplication?

You can see this in the anchor charts below, found in my fourth grade multi-digit multiplication math workshop unit (or found on TpT here ). Using the area model with 2-digit numbers by 2-digit numbers is essentially the same, except the area model is just a bit larger.