Name ____________________________________

Topic #8 Developing Multiplication Concepts

Learning Expectations:

* Model and solve multiplication problems (Using array pictures).

Array - An arrangement of objects in equal rows and columns.

* Identify factors for a known total.

Factor - A whole number that divides a number exactly.

For example, 4 is a factor of 12.

* Understand that a turnaround fact is a pair of facts in which the order of the

factors is reversed. For the fact 2X6=12, the turnaround fact is 6X2=12.

Sample problems:

Make an array for the multiplication problem 4 X 5

Using the problem : 3 X 4 = 12

What are the factors? __________

What is the product for this problem? ____________

Solve : 3,429,671 X 0 = _______________________ Try this : 7 X 0 = _____

When you multiply any number by zero, you get _________________________ .

Missing factors:

3 X ______ = 15                  5 X _______ = 30                       6 X _________ = 12

There are 4 people outside. Each person has on 1 hat.

How many hats are there? __________________________________

Which weighs more? _________________________

4 jars of marbles each jar weigh 2 kg

or

6 bunches of grapes each weigh 1 kg