Exploring Multiplication Through Arrays

The video tutorial explains how to use arrays to represent multiplication problems. It begins with a gym class example, where students are organized into groups to form an array. The concept is further illustrated using stars, cookies, and a card game. Each example demonstrates how to count rows and columns to solve multiplication problems. The tutorial concludes with a review of the key concepts, emphasizing the use of arrays to visualize multiplication.

How many rows are in the array if the class is divided into six groups?

• 4 rows

• 6 rows

• 24 rows

• 3 rows

Tags

CCSS.2.OA.C.4

If each group has four students, how many columns will the array have?

• 6 columns

• 4 columns

• 24 columns

• 3 columns

Tags

CCSS.2.OA.C.3

How many stars are there in total if you have three groups of five stars each?

• 15 stars

• 20 stars

• 5 stars

• 10 stars

Tags

CCSS.2.OA.C.4

How many cookies did Mary bake if she made three groups of four cookies?

• 15 cookies

• 10 cookies

• 7 cookies

• 12 cookies

Tags

CCSS.3.OA.A.3

What multiplication sentence represents an array with two groups of five?

• 2 x 4 = 8

• 5 x 2 = 10

• 5 x 5 = 25

• 2 x 5 = 10

Tags

CCSS.3.OA.A.1

How many cards are there if you have five groups of ten cards each?

• 50 cards

• 15 cards

• 40 cards

• 30 cards

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What is the total number of beans Farmer Nick planted if he had five rows of seven beans each?

• 30 beans

• 25 beans

• 35 beans

• 45 beans

Tags

CCSS.2.OA.C.4

What multiplication problem does an array with four rows and two columns represent?

• 2 x 2 = 4

• 4 x 2 = 8

• 2 x 4 = 8

• 4 x 4 = 16

Tags

CCSS.3.OA.A.1

How many groups are represented by the number of rows in an array?

• Half the number of rows

• The same as the number of rows

• The same as the number of columns

• Twice the number of rows

Tags

CCSS.2.OA.C.4

What does the number of columns in an array represent?

• The number of groups

• The total number of objects

• The number of objects in each group

• The total number of rows

Tags

CCSS.2.OA.C.4