Arrays
Student shows work on personal whiteboard.
5+5+5+5+5 = ?
25
1x9 =
1x2 =
1x1 =
9
2
1
What is division?
The division is splitting the total number into equal groups; Division distributes the total into similar groups.
Draw an array for 4x6. Then, write an equation to describe the array.
Student shows their work on a personal whiteboard.
3+3+3+3+3+3+3= ?
21
What is 2x4?
2x4=8
What is 6 divided by 2?
3
What is an array? Explain and create an example of an array.
An array is a way to express (or show) multiplication; It is a multiplication picture; It is a way of multiplying using illustrations.
7+7+7+7+7+7= ?
42
What is 6x3=?
6x3=18
What is 20 divided by 4?
5
What is a product?
Jade collects marbles. She arranges them in 3 rows of 7. Draw Jade's array to show how many marbles she has altogether. Then, write a multiplication equation to describe the array.
3x7=21 marbles
Jade collects 21 marbles altogether.
8+8+8+8= ?
32
What is 5x9?
5x9=45
Draw a picture to show 18 ÷ 3. Then, fill in the blank to make a true division sentence.
15 ÷ 3 = __________
The student shows work on a personal whiteboard.
15 divided by 3 is 5.
What is a factor? Write a multiplication equation and circle the factors.
Factors are numbers multiplied in a multiplication equation.
Example: 2x6=12
2 and 6 would be circled
Cesar loves to help. He helps Ms. Fitz by placing the desks into 2 rows of 9. Draw an array to show how Cesar arranged the desks. Then, write a multiplication equation to describe the array.
2x9=18 desks
Cesar arranges the desks into 2 rows of 9 in each row, which equals 18 desks.
12+12+12+12+12 = ?
60
What is 9x7?
9x7=63
There are 16 glue sticks for the class. Ms. Fitz divides them into 4 equal groups. How many glue sticks go into each group? Draw the number of glue sticks in each group.
16 divided by 4 is 4. There are 4 glue sticks in each group.
The student shows work on their personal whiteboard.
9. Mary Beth organizes stickers on a page in her sticker book. She arranges them in 4 rows and 5 columns.
a. Draw an array to show Mary Beth’s stickers
b. Use your array to write a multiplication sentence to find Mary Beth’s total number of stickers.
c. Use what you know about the commutative property to write a different multiplication sentence for your array.
a. Student shows array on a personal whiteboard.
b. 4x5=20
c. 4x5=5x4