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### Course: 3rd grade (Eureka Math/EngageNY)>Unit 1

Lesson 1: Topic A: Multiplication and the meaning of the factors

# Equal groups

Sal finds the number of objects in equal groups using skip counting and repeated addition.

## Want to join the conversation?

• If 5 times 9 is 45 is 9 times 5 = 45
• Yes - the product does not change depending on the order in which you multiply.
• Is this just basically times?
• Yes. It is the beginning of multiplication. It is basically just the most simple version.
• why cant you go like 1'2'3'4'5'6'78'
• That is so much slower! if you had to do 12x12, then it would take so long to count all the way up to 144.
• What is skip counting?
• Skip counting is when you count forward or backwards in a times table, for example if i skip count in 3 it would be 3,6,9,12 and so on
• Why is the commutative property called the commutative property?
• Commutative Property is where you can rearrange the numbers and it would still be the same answer. For example, 8+3=11 and 3+8=11. Hope this helps!!
• On the beginning of the video, how do you know there are 3 groups of pigs and 7 in each group? how did you multiply 7x3 which is 21? would you multiply with swaping the numbers? you will get the same amount
• How do you skip count can you make a video on how😅
• What is 1 times 1
• 1 x 1 is 1. anything multiplied by 1 equals the same number.

examples:

2 x 1 = 2
3 x 1 = 3
4 x 1 = 4

even 139792370 x 1 = 139792370
• 3x144=432 did you know that