Exploring Repeated Addition in Multiplication

The video tutorial covers Lesson 13, focusing on multiplication as repeated addition. It begins with an introduction to the concept, followed by a detailed explanation using a word problem involving desks in a classroom. The teacher compares counting each desk individually to using multiplication for efficiency. The commutative property of multiplication is also discussed, demonstrating that the order of factors does not affect the product. The lesson concludes with a summary and instructions for proceeding to the next part of the lesson.

What is multiplication described as in the introduction?

• A way to count objects

• A form of division

• Repeated addition

• A type of subtraction

Tags

CCSS.2.OA.C.4

In the word problem, how many desks are there in each row?

• Eight

• Seven

• Six

• Five

Tags

CCSS.1.NBT.A.1

What is one method mentioned to find the total number of desks in the classroom?

• Counting each desk one by one

• Asking a friend

• Using a calculator

• Guessing the number

Tags

CCSS.1.NBT.A.1

Why might counting each desk one by one not be practical in a larger setting?

• It is too easy

• It requires special tools

• It takes too much time

• It is not accurate

What is a more efficient way to find the total number of desks than counting each one?

• Adding the number of desks in each row repeatedly

• Using a ruler

• Writing a story

• Drawing a picture

Tags

CCSS.3.OA.D.9

How can multiplication help in solving the word problem?

• By guessing the number

• By adding the same number repeatedly

• By subtracting the desks

• By dividing the desks

Tags

CCSS.5.NBT.B.7

What does the commutative property of multiplication state?

• The order of addition matters

• You can only multiply small numbers

• The order of multiplication does not affect the result

• Multiplication is the same as division

Tags

CCSS.2.OA.C.4

If you have 5 rows of 6 desks, what is the total number of desks?

• 30

• 40

• 25

• 35

Tags

CCSS.1.NBT.A.1

What happens to the number of desks when the picture is flipped sideways?

• The number of desks changes

• The desks double

• The number of desks remains the same

• The desks disappear

Tags

CCSS.1.NBT.A.1

What should students do after watching the video?

• Open lesson 13 part 2

• Take a break

• Review the previous lesson

• Start a new subject