What a game! A heartbreaker for Team Canada. Too bad they couldn't award each team a goal....


What is the relationship between addition and multiplication? Multiplication is just repeated addition. For example:
4 + 4 + 4 = 12
You are adding 3 groups of 4 or 3 groups x 4 in one group = 12 altogether

If we take those groups of 4 and put them together we have an ARRAY. An array is an arrangement of objects (x or circle or whatever) into equal ROWS and COLUMNS.

For 3 x 4 = 12 the array could look like this...

X X X X
X X X X
X X X X

But is could also look like this....

X X X
X X X
X X X
X X X

Why? It has to do with a property that both addition and multiplication have called the COMMUTATIVE PROPERTY. Remember that word on Mathletics at the beginning of the year?
It doesn't matter what order you multiply the factors, you will get the same product (answer).

4 x 3 = 12 or 3 x 4 = 12

The key to drawing arrays is lining up objects. Count the number of columns (vertical) and count the number of rows (horizontal). You can also look at as groups. For the first array, there are 3 groups (rows) and 4 in each groups (columns). Those are the factors of your multiplication sentence and the total number of objects is the product (answer).

REMEMBER:


Write the multiplication sentences that match these arrays (there could be two!):

 

See you on Monday. Remember to finish your Mathletics assignments. If you don't, you'll be spending your computer time finishing them!