1. Multiplication
Vocabulary Review

2. Factors & Products
4 x 6 = 24
4 and 6 are factors – the numbers being multiplied together.
24 is the product – the answer to a multiplication problem.

3. Estimate Estimate – to make a good guess by rounding.
In the problem 73 x 6, round 73 to
70 and DO NOT round the single digit number of 6!
This would give you a new problem of
70 x 6.
You can then use the basic math fact of 7 x 6 = 42 to help you get the product.
Simply count the number of zeros in the factors and add them to the end of the basic math fact answer. The product is 420!

4. Multiple A multiple is the product of any two whole numbers.
For example: 3, 6, 9, 12, and 15 are multiples of 3.
3x1=3
3x2=6
3x3=9
3x4=12
3x5=15

5. Properties of Multiplication
Zero Property of Multiplication – the product (answer) of any number times 0
is 0! x0=0 or 9x0=0
Identity Property of Multiplication – the product (answer) of any number times 1 is that number! 4x1=4 or 8x1=8
Commutative Property of Multiplication – two numbers can be multiplied in any order and the product (answer) is the same. 4x2=8 and 2x4=8.

6. Properties of Multiplication
Associative Property of Multiplication –
(3x2)x4 = 3x(4x2)
You can change the grouping of the numbers you multiply! You will still get the same product (answer).