Multiplication Using Arrays

The video tutorial explains how arrays are groups of objects arranged in rows and columns. It demonstrates how to find the total number of objects in an array using repeated addition and multiplication. The tutorial shows that multiplying the number of rows by the number of columns gives the total number of objects. An example of multiplying 5 by 6 using arrays is provided, illustrating the concept of multiplication as repeated addition.

What is an array in the context of this lesson?

• A group of objects arranged in rows and columns

• A mathematical operation

• A single object

• A type of number

How can you find the total number of objects in an array with 5 rows and 3 columns using repeated addition?

• Add 5 to itself 3 times

• Add 3 to itself 5 times

• Subtract 3 from 5

• Multiply 5 by 3

What does the multiplication 5 times 3 represent in terms of an array?

• 3 rows and 5 columns

• 5 rows and 3 columns

• 5 columns and 3 rows

• 3 columns and 5 rows

How can you find the number of objects in an array with 4 rows and 7 columns?

• Add 7 to itself 4 times

• Multiply 4 by 7

• All of the above

• Add 4 to itself 7 times

In the example of 5 times 6, how many total objects are there in the array?

• 30

• 11

• 25

• 36