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## Class 6 math (India)

### Course: Class 6 math (India)>Unit 2

Lesson 4: Associative property

# Properties of multiplication

Sal uses pictures and practice problems to see commutativity and associativity in multiplication.   Created by Sal Khan.

## Want to join the conversation?

• What is PEMDAS?
• Parentheses
Exponents
Multiplication, Division (left to right)
• what is products
• The answer to an addition problem is a sum, subtraction, a difference. A product is the answer to a multiplication problem.
(1 vote)
• thank you but how is this gonna be used in my day to day life?
• super markets....bankers.....paying for stuff...putting stuff in your credit card to get food........buying a house.....counting for money to live :)
• what property is 4(x+3)=(x+3)4
• That would be the commutative property of multiplication because 4 and (x+3) are switched.
• [Solved]At do you have to put the second numbers in brackets?
• No, the brackets just tell you what order to operations in. With multiplication, you can do it in any order
(2x3) x4 and (3x4)x2 are going to mean the same thing.
• what is exponents
• Good question for 3rd grade!

The exponent (or power) is a raised number that tells us how many times to multiply the base (bottom number) by itself.

Example: if the base is 2 and the exponent is 3, we get 2 * 2 * 2 = 8.
So 2 to the 3rd power is 8.
This is also written as 2^3 = 8.

Note that 3^2 would give a different answer: 3 * 3 = 9.
So the order of the base and the exponent is important.

Later in math, you will learn how to do calculations with zero, negative, and fractional exponents.

Have a blessed, wonderful day!
• If I had an equation like this (6+3)x9 could I switch the 9 to the front of the equation like this 9x(6+3)
• Yes, you will get the same answer either way.
• The video made it sound as if the commutative and associative property are the same things...the commutative is when you can move around the numbers (any order) and the associative is when you can move the parentheses? Doing either, you would still get the same answer? Correct?
• what is pemdas?
• Pemdas is a abbrevation that is very useful in telling you the order in which you solve in a multi-step problem. An easy way to remember it is Please Excuse My Dear Aunt Sally As I'm sure it explained in the video, it stands for:

P- parentheses
E- Exponents
M- Multiplication
D- Division