Multiplication

This week we will begin looking at multiplying whole numbers.  We will review multiplication facts a bit each day this week. I would encourage many students to review their facts at home using flash cards. Using xtramath is another option; however, you must complete the addition and subtraction sections before you can start multiplication.  Committing these facts to memory will be even more important when we begin division.

Here's a look at the skills we will cover:

Grade 5
-multiply two-digit whole numbers by two-digit whole numbers using estimation, algorithms and other strategies
-divide three-digit whole numbers by one-digit whole numbers
-multiply decimal numbers by 10, 100, 1000 and 10 000 and divide decimal numbers by 10 and 100 suing mental strategies
-use estimation when solving problems to judge the reasonableness of a solution

Shortly, I will introduce the students to "the array" or "area model."  Take a look:

This strategy is called the area model because it uses the idea of area where you find the number of squares it takes to cover a rectangle using length x width. I compare it to an array where you can fit 60 x's across and 20 x's down so the box can fit 60 x's, 20 times. 

The traditional algorithm is another method we'll use to find products.

Stay tuned for more updates and remind your son or daughter to work on their math facts.  Thanks!