1. Whole Numbers
Multiplication
What will we learn today?
• Multiplication as repeated addition
• Solving 1- step word problems
2. Take a look at this example.
There are 4 boxes.
Each box has 3 balls.
How many balls are there altogether?
3 + 3 + 3 + 3 = 12
3. A few ways to represent the answer.
3 + 3 + 3 + 3 = 12
4 threes = 12
4 groups of 3 = 12
4 x 3 = 12
(We use “x” to represent „groups of‟)
There are 12 balls altogether.
4. Let‟s try another question.
3 + 3 + 3 + 3 + 3 + 3 = 18
6 threes = 18
6 groups of 3 = 18
5. 4 groups of 2
4 X 2
8
4 + 4 + 4 + 4
4 twos
2 groups of 5
2 X 5
5 + 5
10
2 fives
