Arrays and Repeated Addition

What is an array?

• An array is a way to organize objects or numbers in rows and columns.

• An array is a type of data structure that can only hold strings.

• An array is a collection of unique elements that cannot be repeated.

• An array is a method for sorting data in ascending order.

What is the total if I have 6 rows of 2?

• 10

• 12

• 14

• 8

If I have 3 rows of 3, how many do I have?

• 6

• 7

• 8

• 9

What is the repeated addition sentence for 5 bunches of 3?

• 3 + 3 + 3 + 3 + 3 = 12

• 3 + 3 + 3 + 3 + 3 = 14

• 3 + 3 + 3 + 3 + 3 = 15

• 3 + 3 + 3 + 3 + 3 = 16

How do you find the total number of items in an array?

• Add the number of rows and columns.

• Multiply the number of rows by the number of columns.

• Count each item individually.

• Divide the total number of items by the number of rows.

What direction do rows go?

• Up and down

• Across

• Diagonal

• In a circle

What is the repeated addition sentence for 6 rows of 2?

• 2 + 2 + 2 + 2 + 2 + 2 = 12

• 2 + 2 + 2 + 2 + 2 + 2 = 10

• 2 + 2 + 2 + 2 + 2 + 2 = 14

• 2 + 2 + 2 + 2 + 2 + 2 = 8

What is the repeated addition sentence for 2 rows of 5?

• 5 + 5 = 10

• 2 + 2 + 2 + 2 + 2 = 10

• 5 + 2 = 7

• 10 - 5 = 5

What is the repeated addition sentence for 4 columns of 2?

• 2 + 2 + 2 + 2 = 8

• 2 + 2 + 2 + 2 = 6

• 2 + 2 + 2 + 2 = 10

• 2 + 2 + 2 + 2 = 4

What is the repeated addition sentence for 3 rows of 4?

• 4 + 4 + 4 = 12

• 3 + 3 + 3 = 9

• 4 + 4 + 4 = 10

• 3 + 4 + 3 = 11